Prehistoric pile dwellings around Lake Zurich

Last updated
UNESCO World Heritage Site
Rapperswil - Seedamm - Holzbrucke - Hurden - Etzel Kulm 2010-10-21 16-44-08.JPG
Seedamm and reconstruction of the medieval lake bridge at Rapperswil, Lake Zurich to the left, Obersee to the right, Hurden in the foreground; the area of three pile dwellings and the Neolithic lake crossing.
Location Cantons of Schwyz, St. Gallen and Zurich in Switzerland
Part of Prehistoric Pile Dwellings around the Alps
Includes
Criteria Cultural: (iv), (v)
Reference 1363
Inscription2011 (35th Session)
Website www.palafittes.org

Prehistoric pile dwellings around Lake Zurich are pile dwelling sites located around Lake Zurich in the cantons of Schwyz, St. Gallen and Zurich.

Contents

The article focuses on the 9 Lake Zurich sites that are among the 111 sites included in the UNESCO World Heritage Prehistoric pile dwellings around the Alps established in 2011. 56 of the 111 UNESCO World Heritage pile dwelling sites are located in Switzerland and 9 thereof are located on the Lake Zurich seashore. The article also includes one UNESCO World Heritage site at the nearby Greifensee and one UNESCO World Heritage site at the Pfäffikersee.

The 11 sites described here are only a selection, just like the 111 UNESCO World Heritage sites are only a selection of more than 900 known sites of prehistoric pile dwellings in the Alpine region.

Geography

The 11 prehistoric pile-dwelling (or stilt house) sites are concentrated within an area of about 40 square kilometres (15 sq mi), on Lake Zurich, specifically Obersee lakeshore in the cantons of Schwyz, St. Gallen and Zurich.

Characteristics

The pile-dwelling sites were built from around 5000 BC to 500 BC. Contrary to popular belief, the settlements were not erected over water, but on nearby marshy land, among them on the Seedamm respectively Frauenwinkel area, or, on the then swamp land between the Limmat and Lake Zurich around Sechseläutenplatz on small islands and peninsulas in Zurich. The settlements were set on piles to protect against occasional flooding by the Linth and Jona. Because the lake has grown in size over time, most of the original piles are now around 4 metres (13 ft) to 7 metres (23 ft) under the water level of 406 metres (1,332 ft), giving modern observers the false impression that they always had been surrounded by water.

Most of the settlements were inhabited for some decades and then re-erected at a quite different location. A notable exception is the settlement Robenhausen at the Pfäffikersee, discovered and researched by Jakob Messikommer at the end of the 19th century, which was continuously inhabited for thousands of years.

Archaeological excavations were conducted in only some of the sites in order to preserve the heritage for future generations. Nevertheless, the excavations yielded evidence that provides insight into life in prehistoric times during the Neolithic and Bronze Age in Alpine Europe and the way communities interacted with their environment. The settlements are a unique group of exceptionally well-preserved and culturally rich archaeological sites, which constitute one of the most important sources for the study of early agrarian societies. [1] [2]

Sites

Sources, among them area, date and location as well as coordinates and ID, used in the table base on Prehistoric pile dwellings around the Alps, and are listed as references. [3] [4] The list bases on the dates of December 2014.

Lake Zurich

Excavations of the "Pan-European stilt house settlements" began at Lake Zurich in Switzerland. During the winter of 1853–54, in the context of lowered water levels at Lake Zurich, archaeologist Ferdinand Keller discovered the remains of the Meilen–Rorenhaab site. [5] [6] [7] Probably the majority of the important sites of the so-called Horgen culture are situated on lakeshore, including Grosser Hafner on a former lake island and Kleiner Hafner on a peninsula at Sechseläutenplatz respectively at the effluence of the Limmat, and Zurich–Enge Alpenquai within an area of about 0.2 hectares (0.49 acres) in the city of Zurich.

Freienbach–Hurden Rosshorn is a unique site because it was not a dwelling site but the site of prehistoric lake crossings between Hurden and Rapperswil (today's main lake crossing in this area is the Rapperswil Seedamm ). The dwelling sites Hurden Seefeld and Technikum are closely associated with these prehistoric lake crossings; the Feldbach site is also not far away.

Sites with World Heritage status

The following nine Lake Zurich sites are among the 111 sites included in the UNESCO World Heritage Prehistoric pile dwellings around the Alps.

Native nameDescriptionLocationCantonCoordinatesSize (ha) [8] Buffer (ha) [8] Serial IDApprox. occupied (BC) [9] Image
Freienbach–Hurden Rosshorn Freienbach–Hurden Rosshorn provides early evidence of transport routes combined with special metal finds interpreted as sacrificial offerings. The site includes several lake crossings beginning in the Horgen culture. Several Early Bronze Age construction phases have been identified, as well as remains from the Hallstatt culture and Roman era providing dendrochronological dates about periods from which no other sites are known. [10] Hurden Schwyz 47°13′10.38″N8°48′24.6″E / 47.2195500°N 8.806833°E / 47.2195500; 8.806833 (Freienbach–Hurden Rosshorn) 4.3220.101363-027
CH-SZ-01
3500–3000
2000–500
Frauenwinkel - Seedamm- Hurden - Etzel Kulm 2010-10-21 16-40-54.JPG
Freienbach–Hurden Seefeld The early Corded ware culture in one of several settlement phases provided dates which is of particular scientific interest in terms of the emergence and dissemination in Switzerland. The layers are extraordinarily well preserved and hold valuable reserves of research material. Extending over 300 metres (984 ft) to 400 metres (1,312 ft) metres, the settlement is also of great interest due to its function and internal organization on this important transport route crossing the lake. [11] Hurden Schwyz 47°12′43.05″N8°48′8.22″E / 47.2119583°N 8.8022833°E / 47.2119583; 8.8022833 (Freienbach–Hurden Seefeld) 2.4016.121363-028
CH-SZ-02
3500–2500 Rapperswil-Jona - Kempraten - Rapperswil - Jona - Frauenwinkel - Seedamm - Holzbrucke - Hurden - Ruti - Feusisberg - Etzel 2010-10-21 15-54-06.jpg
Rapperswil-Jona/Hombrechtikon–Feldbach Distinctive house plans and a cultural layer dating from the middle phase of the Corded Ware period, is of particular importance in that multi-phase settlement. The evidence of a settlement from the transitional phase between the Early and Middle Bronze Ages, is another interesting aspect of the site, yielded a date of 1490 BC, which is very late within the Early Bronze Age pile-dwelling period. The dates refer to the same period as the transport routes across the lake from Hurden-Rosshorn to Rapperswil (CH-SZ-01). and slightly post-date the neighbouring site Rapperswil-Jona–Technikum (CH-SG-02). [12] HombrechtikonKempraten Zurich 47°14′19.66″N8°47′45.96″E / 47.2387944°N 8.7961000°E / 47.2387944; 8.7961000 (Rapperswil-Jona/Hombrechtikon–Feldbach) 7.5015.501363-031
CH-SG-01
4000–1000 Feldbach - Zurichsee - Dampfschiff Stadt Rapperswil 2012-07-15 17-37-36 (P7000).JPG
Rapperswil-Jona–Technikum Multiple palisades and a clear visible settlement structure located on a former island, characterise the Early Bronze Age site dated in the 17th century BC. It points to the same period as the early footbridges across the Seedamm between Rapperswil and Hurden-Rosshorn (CH-SZ-01). The settlement was certainly of great importance as the centre of the region, and it may even have played a role in controlling this important transport route. [13] Rapperswil St. Gallen 47°13′14.21″N8°48′56.55″E / 47.2206139°N 8.8157083°E / 47.2206139; 8.8157083 (Rapperswil-Jona–Technikum) 0.9249.101363-032
CH-SZ-02
2000–1500 'Inseldorf' Rapperswil-Jona-Technikum beim Heilighusli, Ansicht von der Holzbrucke 2013-02-25 14-12-27 (P7700).JPG
Erlenbach–Winkel From the Early Bronze Age (20th/19th centuries BC) are numerous finds and ground plans of Corded Ware houses of particular interest. The latter are associated with material from the final phase of the Corded Ware Culture marking a hiatus of 600 years in the period of constructing pile dwellings north of the Alps until the Early Bronze Age. In a European context, the house constructions are of particular interest, because the Corded Ware Culture is defined mainly by its grave finds, whereas settlements are usually missing from the archaeological record. [14] Erlenbach Zurich 47°17′49.91″N8°35′46.31″E / 47.2971972°N 8.5961972°E / 47.2971972; 8.5961972 (Erlenbach–Winkel) 3.016.601363-050
CH-ZH-01
4000–1500
1000–500
Zurichsee - Erlenbach IMG 2207.JPG
Meilen–Rorenhaab As mentioned, this site was the starting point of pile-dwelling research and therefore interesting from the point of view of research history. It is one of several sites in a small area illustrating the typical settlement dynamics of a micro-region during the Neolithic. All periods are represented here, usually with several settlement phases, but particularly from the Early Bronze Age interesting are numerous dendrochronological dates, which allow to study the development of this period. [15] Meilen Zurich 47°15′50.14″N8°39′36.82″E / 47.2639278°N 8.6602278°E / 47.2639278; 8.6602278 (Meilen–Rorenhaab) 0.704.801363-052
CH-ZH-06
4000–2500
2000–1500
1000–500
Rohrenhab, Uferzone, neolithische und fruhbronzezeitliche Seeufersiedlungen in Meilen 2011-08-29 14-44-02.jpg
Wädenswil–Vorder Au Located on the Au Peninsula, the site has yielded special pottery from the transitional period between the Pfyn and Horgen Cultures. The Corded Ware settlement phase contained a bell beaker, which allowed to draw conclusions on the links between the Corded Ware and Bell Beaker Cultures. Since it has yielded a special type of pottery, the Early Bronze Age settlement phase is also important, and helps trace the distribution of Arbon style pottery in the region during the 17th century BC. [16] Au-Wädenswil Zurich 47°14′48.88″N8°39′11.64″E / 47.2469111°N 8.6532333°E / 47.2469111; 8.6532333 (Vorder Au) 1.4922.501363-053
CH-ZH-07
3500–1500 Au Halbinsel - Wadenswil - Zurichsee - Feusisberg - Etzel 2010-10-21 15-52-22.JPG
Zurich–Enge Alpenquai Alpenquai in the city of Zurich is one of the most important Late Bronze Age lakeside settlements in Central Europe: its huge size and its almost uninterrupted occupation from 1050 BC to 800 BC, rich imports and the excellent state of preservation of the layers with unique organic finds and architectural elements mark it as a cultural heritage site of worldwide importance. In addition, the final phase dates from the transition to the Iron Age, a period otherwise rarely found. [7] Zurich-Enge Zurich 47°21′52.06″N8°32′19.47″E / 47.3644611°N 8.5387417°E / 47.3644611; 8.5387417 (Zurich–Enge Alpenquai) 2.9317.401363-055
CH-ZH-09
1500–500 Altartafeln von Hans Leu d.A. (Haus zum Rech) - linkes Limmatufer 2011-08-17 15-26-36.JPG
Zurich–Kleiner Hafner Once a former island or peninsula at the estuary of Lake Zurich lakeshore and the Limmat, the settlement Kleiner Hafner represents all periods of pile dwelling. There are finds from the Neolithic Egolzwil, Cortaillod and Horgen cultures forming an important reference assemblage which allows to study the cultural development during the late 5th and early 4th millennia BC. [17] Zurich Zurich 47°21′58.19″N8°32′38.66″E / 47.3661639°N 8.5440722°E / 47.3661639; 8.5440722 (Grosser und Kleiner Hafner) 0.6416.561363-056
CH-ZH-10
5000–1500
1000–500
Unteres Zurichseebecken (prahistorische Seeufersiedlungen Alpenquai und Kleiner Hafner in Zurich) - Uetliberg -standorte- 2013-11-27 14-51-44.JPG

Sites without World Heritage status

Examples include:

Greifensee

The Greifensee is located at a distance of appromimately 7km to the northeast of Lake Zurich.

Native nameDescriptionLocationCantonCoordinatesSize (ha) [8] Buffer (ha) [8] Serial IDApprox. occupied (BC) [9] Image
Greifensee–Storen/Wildsberg Characterized is that settlement by a large settlement area on a very steep slope on Greifensee lakeshore. From a scientific point of view and besides the location, a particularly interesting aspect is a phase of occupation dating from the Late Horgen culture. Furthermore, a copper spiral coil and a copper dagger from the Pfyn culture bear early witness to the processing of metal in this region. The settlement is largely undisturbed and thus holds great scientific potential for future research. [18] Greifensee Zurich 47°21′37.8″N8°40′51.51″E / 47.360500°N 8.6809750°E / 47.360500; 8.6809750 (Greifensee–Storen/Wildsberg) 9.5911.701363-051
CH-ZH-02
4000–2500 Greifensee - Storen, neolithische Seeufersiedlungen 2011-09-03 15-25-16.JPG

Pfäffikersee

The Pfäffikersee is located at a distance of appromimately 6km to the east of the Greifensee.

Native nameDescriptionLocationCantonCoordinatesSize (ha) [8] Buffer (ha) [8] Serial IDApprox. occupied (BC) [9] Image
Wetzikon–Robenhausen Robenhausen in the spacious area is characterized by the excellent preservation of organic remains, and the site is known for its evidence of textile production. It has yielded numerous excellently preserved organic finds assemblages, mainly of textiles as well as parts of a Neolithic loom. An unusual find was a board, which was probably a Pfyn-period door. [19] Wetzikon Zurich 47°20′9.05″N8°47′8.16″E / 47.3358472°N 8.7856000°E / 47.3358472; 8.7856000 (Wetzikon–Robenhausen) 0.92155.001363-054
CH-ZH-08
4000–2500
2000–1500
1000–500
Robenhauser Riet - Wetzikon - Pfaffikersee - Seegraben IMG 4877.JPG

Protection

As well as being part of the 56 Swiss sites of the UNESCO World Heritage Site, each of these 11 prehistoric sites is also listed in the Swiss inventory of cultural property of national and regional significance as a Class A object of national importance. [20]

Hence, the area of each settlement is provided as a historical site under federal protection, within the meaning of the Swiss Federal Act on the nature and cultural heritage (German: Bundesgesetz über den Natur- und Heimatschutz NHG) of 1 July 1966. Unauthorised researching and purposeful gathering of findings represent a criminal offense according to Art. 24. [21]

See also

Literature

Related Research Articles

<span class="mw-page-title-main">Lake Zurich</span> Major lake in Switzerland

Lake Zurich is a lake in Switzerland, extending southeast of the city of Zurich. Depending on the context, Lake Zurich or Zürichsee can be used to describe the lake as a whole, or just that part of the lake downstream of the Hurden peninsula and Seedamm causeway. In the latter case, the upstream part of the lake is called Obersee, whilst the lower part is sometimes also referred to as the Lower Lake, respectively.

<span class="mw-page-title-main">Rapperswil-Jona</span> Municipality in St. Gallen, Switzerland

Rapperswil-Jona is a municipality in the Wahlkreis (constituency) of See-Gaster in the canton of St. Gallen in Switzerland. Besides Rapperswil and Jona, which were separate municipalities until 2006, Rapperswil-Jona also includes Bollingen, Busskirch, Curtiberg, Kempraten-Lenggis, and Wagen.

<span class="mw-page-title-main">Greifensee (lake)</span> Lake in Switzerland

Greifensee is a lake in the canton of Zürich in Switzerland.

<span class="mw-page-title-main">Rapperswil</span> Former municipality of Switzerland in St. Gallen

Rapperswil is a former municipality and since January 2007 part of the municipality of Rapperswil-Jona in the Wahlkreis (constituency) of See-Gaster in the canton of St. Gallen in Switzerland, located between Obersee and the main part of Lake Zurich.

<span class="mw-page-title-main">Kempraten</span> Former municipality of Switzerland in St. Gallen

Kempraten-Lenggis is a village (Kirchdorf) within the municipality of Rapperswil-Jona, Wahlkreis (constituency) of See-Gaster in the canton of St. Gallen in Switzerland. The remains of the Gallo-Roman settlement Centum Prata are one of the most important archaeological sites in the canton of St. Gallen; Centrum Prata is located at the so-called Kempratnerbucht, in Rapperswil and Busskirch on Zürichsee lake shore.

<span class="mw-page-title-main">Holzbrücke Rapperswil-Hurden</span> Wooden pedestrian bridge crossing the Obersee part of Lake Zurich in Switzerland

Holzbrücke Rapperswil-Hurden is a wooden pedestrian bridge between the city of Rapperswil and the village of Hurden crossing the Obersee in Switzerland. On 6 April 2001, the footbridge was opened. With a length of 841 metres (2,759 ft) it is the longest wooden bridge in Switzerland.

<span class="mw-page-title-main">Hurden</span> Former municipality in Schwyz, Switzerland

Hurden is a village in the municipality of Freienbach in the canton of Schwyz in Switzerland. First mentioned in 1217, the name "de Hurden" was used for the peninsula and for the fish traps made of woven work, called "Hürden" or "Hurden", which were used by the locals.

<span class="mw-page-title-main">Prehistoric pile dwellings around the Alps</span> UNESCO World Heritage Site in Europe

Prehistoric pile dwellings around the Alps are a series of prehistoric pile dwelling settlements in and around the Alps built from about 5000 to 500 BC on the edges of lakes, rivers or wetlands. In 2011, 111 sites located variously in Switzerland (56), Italy (19), Germany (18), France (11), Austria (5) and Slovenia (2) were added to the UNESCO World Heritage Site list. In Slovenia, these were the first World Heritage Sites to be listed for their cultural value.

<span class="mw-page-title-main">Kleiner Hafner</span> Prehistoric pile dwelling in Switzerland

Kleiner Hafner is one of the 111 serial sites of the UNESCO World Heritage Site Prehistoric pile dwellings around the Alps, of which are 56 located in Switzerland.

<span class="mw-page-title-main">Frauenwinkel</span> Mire landscape in Switzerland

Frauenwinkel is a mire landscape in Switzerland, situated at the Seedamm area on Zürichsee lakeshore in the municipality of Freienbach in the Canton of Schwyz.

<span class="mw-page-title-main">Freienbach–Hurden Rosshorn</span> UNESCO World Heritage Site in Canton of Schwyz, Switzerland

Freienbach–Hurden Rosshorn, more often called Hurden Rosshorn or simply Rosshorn, is one of the 111 serial sites of the UNESCO World Heritage Prehistoric pile dwellings around the Alps, of which are 56 located in Switzerland. The Rosshorn site is exceptional because it doesn't contain remains of a prehistoric settlement but instead remains of prehistoric and historic bridges that were built in a shallow area of Lake Zurich.

<span class="mw-page-title-main">Freienbach–Hurden Seefeld</span> UNESCO World Heritage Site in Canton of Schwyz, Switzerland

Freienbach–Hurden Seefeld is one of the 111 serial sites of the UNESCO World Heritage Site Prehistoric pile dwellings around the Alps, of which are 56 located in Switzerland.

<span class="mw-page-title-main">Rapperswil-Jona/Hombrechtikon–Feldbach</span> Archaeological site in Switzerland

Rapperswil-Jona/Hombrechtikon–Feldbach is one of the 111 serial sites of the UNESCO World Heritage Site Prehistoric pile dwellings around the Alps, of which are 56 located in Switzerland.

<span class="mw-page-title-main">Rapperswil-Jona–Technikum</span> Archaeological site in Switzerland

Rapperswil-Jona–Technikum is one of the 111 serial sites of the UNESCO World Heritage Site Prehistoric pile dwellings around the Alps, of which are 56 located in Switzerland. It is a small former island in the upper Lake Zürich in Rapperswil, a locality of the municipality of Rapperswil-Jona in the Canton of St. Gallen.

<span class="mw-page-title-main">Erlenbach–Winkel</span> UNESCO World Heritage Site in Canton of Zürich, Switzerland

Erlenbach–Winkel is one of the 111 serial sites of the UNESCO World Heritage Site Prehistoric pile dwellings around the Alps, of which are 56 located in Switzerland.

<span class="mw-page-title-main">Greifensee–Storen/Wildsberg</span> UNESCO World Heritage Site in Canton of Zürich, Switzerland

Greifensee–Storen–Wildsberg is one of the 111 serial sites of the UNESCO World Heritage Site Prehistoric pile dwellings around the Alps, of which are 56 located in Switzerland.

<span class="mw-page-title-main">Meilen–Rorenhaab</span> UNESCO World Heritage Site in Canton of Zürich, Switzerland

Meilen–Rorenhaab is one of the 111 serial sites of the UNESCO World Heritage Site Prehistoric pile dwellings around the Alps, of which 56 are located in Switzerland.

<span class="mw-page-title-main">Zürich–Enge Alpenquai</span> UNESCO World Heritage Site in Canton of Zürich, Switzerland

Zürich–Enge Alpenquai is one of the 111 serial sites of the UNESCO World Heritage Site Prehistoric pile dwellings around the Alps, of which 56 are located in Switzerland.

<span class="mw-page-title-main">Wädenswil–Vorder Au</span> UNESCO World Heritage Site in Canton of Zürich, Switzerland

Wädenswil–Vorder Au is one of the 111 serial sites of the UNESCO World Heritage Site Prehistoric pile dwellings around the Alps, of which 56 are located in Switzerland.

<span class="mw-page-title-main">Jakob Messikommer</span> Swiss archaeologist

Jakob Messikommer was a Swiss archaeologist who among others discovered and researched the UNESCO serial site Wetzikon–Robenhausen.

References

  1. "UNESCO World Heritage Site – Prehistoric Pile dwellings around the Alps". UNESCO. 2011-06-21. Retrieved 2014-12-07.
  2. "Six new sites inscribed on UNESCO's World Heritage List". UNESCO World Heritage Centre. 2011-06-27. Retrieved 2014-12-07.
  3. Prehistoric Pile dwellings around the Alps, Locations accessed 12 August 2011. Due to errors in coordinates from this document, some coordinates come from other sources.
  4. Location and coordinates taken from Palafittes.org nominating documents-Revised executive summary Archived 2012-03-30 at the Wayback Machine accessed 12 August 2011. Coordinates converted from UTM.
  5. Keller, Ferdinand (1854). "Die keltischen Pfahlbauten in den Schweizerseen". Mittheilungen der Antiquarischen Gesellschaft in Zürich. 1.
  6. Wood, James, ed. (1907). "Keller, Ferdinand"  . The Nuttall Encyclopædia . London and New York: Frederick Warne.
  7. 1 2 "Sites Switzerland: Zurich–Enge Alpenquai (CH-ZH-09)". palafittes.org. Archived from the original on 2014-10-07. Retrieved 2014-12-07.
  8. 1 2 3 4 5 6 Size includes the area of the settlement; buffer zone comprises also lakeshore area in hectares (ha)  – 0.404687261 hectare = 1 acre.
  9. 1 2 3 "Download Nomination File". palafittes.org. Archived from the original on 2012-03-30. Retrieved 2014-12-08.
  10. "Sites Switzerland: Freienbach–Hurden Rosshorn (CH-SZ-01)". palafittes.org. Archived from the original on 2014-10-07. Retrieved 2014-12-07.
  11. "Sites Switzerland: Freienbach–Hurden Seefeld (CH-SZ-02)". palafittes.org. Archived from the original on 2014-10-07. Retrieved 2014-12-07.
  12. "Sites Switzerland: Rapperswil-Jona/Hombrechtikon–Feldbach (CH-SG-02)". palafittes.org. Archived from the original on 2014-10-07. Retrieved 2014-12-07.
  13. "Sites Switzerland: Rapperswil-Jona–Technikum (CH-SG-02)". palafittes.org. Archived from the original on 2014-10-07. Retrieved 2014-12-07.
  14. "Sites Switzerland: Erlenbach–Winkel (CH-ZH-01)". palafittes.org. Archived from the original on 2014-10-07. Retrieved 2014-12-07.
  15. "Sites Switzerland: Meilen–Rorenhaab (CH-ZH-06)". palafittes.org. Archived from the original on 2014-10-07. Retrieved 2014-12-07.
  16. "Sites Switzerland: Wädenswil–Vorder Au (CH-ZH-07)". palafittes.org. Archived from the original on 2014-10-07. Retrieved 2014-12-07.
  17. "Sites Switzerland: Zürich–Grosse Stadt Kleiner Hafner (CH-ZH-10)". palafittes.org. Archived from the original on 2014-10-07. Retrieved 2014-12-07.
  18. "Sites Switzerland: Greifensee–Storen/Wildsberg (CH-ZH-02)". palafittes.org. Archived from the original on 2014-10-07. Retrieved 2014-12-07.
  19. "Sites Switzerland: Wetzikon–Robenhausen (CH-ZH-08)". palafittes.org. Archived from the original on 2014-10-07. Retrieved 2014-12-07.
  20. "A-Objekte KGS-Inventar" (PDF). Schweizerische Eidgenossenschaft, Amt für Bevölkerungsschutz. 2015-01-01. Archived from the original (PDF) on 2015-10-01. Retrieved 2015-09-13.
  21. "Bundesgesetz über den Natur- und Heimatschutz (NHG)" (PDF) (in German). Hochbaudepartement Stadt Zürich. 2014-10-12. Retrieved 2015-08-21.
  22. Beat Eberschweiler (2004). "Ur- und frühgeschichtliche Verkehrswege über den Zürichsee (digitalized version)" (in German). ETH Bibliothek. Retrieved 2014-12-08.