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A boulder wall, also spelled boulder-walls or bowlder-wall, is a kind of wall built of round flints and pebbles, laid in a strong mortar. It is used where the sea has a beach cast up, or where there are plenty of flints.
Bouldering is a form of free climbing that is performed on small rock formations or artificial rock walls without the use of ropes or harnesses. While bouldering can be done without any equipment, most climbers use climbing shoes to help secure footholds, chalk to keep their hands dry and to provide a firmer grip, and bouldering mats to prevent injuries from falls. Unlike free solo climbing, which is also performed without ropes, bouldering problems are usually less than six metres (20 ft) tall. Traverses, which are a form of boulder problem, require the climber to climb horizontally from one end to another. Artificial climbing walls allow boulderers to climb indoors in areas without natural boulders. In addition, bouldering competitions take place in both indoor and outdoor settings.
Climbing is the activity of using one's hands, feet, or other parts of the body to ascend a steep topographical object that can range from the world's tallest mountains to small boulders. Climbing is done for locomotion, sporting recreation, for competition, and is also done in trades that rely on ascension, such as rescue and military operations. Climbing is done indoors and outdoors, on natural surfaces, and on artificial surfaces
Flint, occasionally flintstone, is a sedimentary cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Historically, flint was widely used to make stone tools and start fires.
In geology, a boulder is a rock fragment with size greater than 25.6 cm (10.1 in) in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive. In common usage, a boulder is too large for a person to move. Smaller boulders are usually just called rocks or stones.
Many climbing routes have a grade that reflects the technical difficulty—and in some cases the risks and commitment level—of the route. The first ascensionist can suggest a grade, but it will be amended to reflect the consensus view of subsequent ascents. While many countries with a strong tradition of climbing developed grading systems, a small number of grading systems have become internationally dominant for each type of climbing, which has contributed to the standardization of grades worldwide. Over the years, grades have consistently risen in all forms of climbing, helped by improvements in climbing technique and equipment.
Amersfoort is a city and municipality in the province of Utrecht, Netherlands. As of 31 January 2023, the municipality had a population of 160,902, making it the second-largest of the province and fifteenth-largest of the country. Amersfoort is also one of the largest Dutch railway junctions with its three stations—Amersfoort Centraal, Schothorst and Vathorst—due to its location on two of the Netherlands' main east to west and north to south railway lines. The city was used during the 1928 Summer Olympics as a venue for the modern pentathlon events. Amersfoort marked its 750th anniversary as a city in 2009.
Eric Flint was an American author, editor, and e-publisher. The majority of his works are alternate history science fiction, but he also wrote humorous fantasy adventures. His works have been listed on The New York Times, The Wall Street Journal, The Washington Post, and Locus magazine best-seller lists. He was a co-founder and editor of the Baen Free Library.
Glossary of climbing terms relates to rock climbing, mountaineering, and to ice climbing.
Frank Putnam Flint was a United States Senator from California from 1905 to 1911.
Free solo climbing, or free soloing, is a form of rock climbing where the climbers climb solo without ropes or other protective equipment, using only their climbing shoes and their climbing chalk. Free soloing is the most dangerous form of climbing, and, unlike bouldering, free soloists climb above safe heights, where a fall can be fatal. Though many climbers have free soloed climbing grades they are very comfortable on, only a tiny group free solo regularly, and at grades closer to the limit of their abilities.
Cyclopean masonry is a type of stonework found in Mycenaean architecture, built with massive limestone boulders, roughly fitted together with minimal clearance between adjacent stones and with clay mortar or no use of mortar. The boulders typically seem unworked, but some may have been worked roughly with a hammer and the gaps between boulders filled in with smaller chunks of limestone. It is similar to Indian masonry such as the Cyclopean Wall of Rajgir.
Hertfordshire puddingstone is a conglomerate sedimentary rock composed of rounded flint pebbles cemented together by a younger matrix of silica quartz. The distinctive rock is largely confined to the English counties of Buckinghamshire and Hertfordshire but small amounts occur throughout the London Basin. It is quite commonly found in fields in and around Chesham, where pieces can be seen as boundary stones and in rockeries. Despite a superficial similarity to concrete, it is an entirely natural silcrete. A fracture runs across both the pebbles and the sandy matrix as both have equal strength unlike concrete where the pebbles remain whole and a fracture occurs only in the matrix. Like other puddingstones, it derives its name from the manner in which the embedded flints resemble the plums in a pudding. It forms the local base of the Upnor Formation of the Lambeth Group.
Flint City Bucks is an American soccer team based in Flint, Michigan, United States. Founded in 1995, the team plays in USL League Two.
Silex is any of various forms of ground stone. In modern contexts the word refers to a finely ground, nearly pure form of silica or silicate.
Wall is a small village and civil parish in Staffordshire, England, just south of Lichfield. It lies on the site of the Roman settlement of Letocetum.
Competition climbing is a form of regulated rock climbing competition held indoors on purpose-built artificial climbing walls. The three competition climbing disciplines are lead climbing, bouldering, and speed climbing. The result of multiple disciplines can be used in a "combined" format to determine an all-round winner. Competition climbing is sometimes called "sport climbing", which is the name given to pre-bolted lead climbing.
In architecture, flushwork is decorative masonry work which combines on the same flat plane flint and ashlar stone. If the stone projects from a flat flint wall then the term is proudwork, as the stone stands "proud" rather than being "flush" with the wall.
In climbing and mountaineering, a traverse is a section of a climbing route where the climber moves laterally, as opposed to in an upward direction. The term has broad application, and its use can range from describing a brief section of lateral movement on a pitch of a climbing route, to large multi-pitch climbing routes that almost entirely consist of lateral movement such as girdle traverses that span the entire rock face of a crag, to mountain traverses that span entire ridges connecting chains of mountain peaks.
Tell Ezou is a prehistoric, Neolithic tell, about 2 hectares (220,000 sq ft) in size, located between Krak des Chevaliers and Homs, in Syria.
The Sixtoe Mound site (9MU100) is an archaeological site in Murray County, Georgia excavated by Arthur Randolph Kelly from 1962-1965 as a part of the Carters Dam project conducted for the National Park Service by the University of Georgia. The site consisted of a low platform mound and an associated village. The majority of the mound was excavated, while the village received little excavation.
This article incorporates text from a publication now in the public domain : Chambers, Ephraim, ed. (1728). "Boulder wall". Cyclopædia, or an Universal Dictionary of Arts and Sciences (1st ed.). James and John Knapton, et al.
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