The Channel Tunnel (French: Le tunnel sous la Manche; also nicknamed the Chunnel) is a 50.45-kilometre (31.35 mi) rail tunnel linking Folkestone, Kent, in England, with Coquelles, Pas-de-Calais, near Calais in northern France, beneath the English Channel at the Strait of Dover. It is the only fixed link between the island of Great Britain and the European mainland. At its lowest point, it is 75 m (250 ft) deep below the sea bed and 115 m (380 ft) below sea level. At 37.9 kilometres (23.5 mi), the tunnel has the longest underwater section of any tunnel in the world, although the Seikan Tunnel in Japan is both longer overall at 53.85 kilometres (33.46 mi) and deeper at 240 metres (790 ft) below sea level. The speed limit for trains through the tunnel is 160 kilometres per hour (99 mph).
Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. It was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin D. Roosevelt. Its construction was the result of a massive effort involving thousands of workers, and cost over one hundred lives. Originally known as Boulder Dam from 1933, it was officially renamed Hoover Dam, for President Herbert Hoover, by a joint resolution of Congress in 1947.
The Holland Tunnel is a vehicular tunnel under the Hudson River. It connects Manhattan in New York City, New York, to the east, and Jersey City, New Jersey, to the west. An integral conduit within the New York metropolitan area, the Holland Tunnel is operated by the Port Authority of New York and New Jersey (PANYNJ). The tunnel carries Interstate 78; the New Jersey side is also designated the eastern terminus of New Jersey Route 139.
Sequoia National Park is an American national park in the southern Sierra Nevada east of Visalia, California. The park was established on September 25, 1890 to protect 404,064 acres of forested mountainous terrain. Encompassing a vertical relief of nearly 13,000 feet (4,000 m), the park contains the highest point in the contiguous United States, Mount Whitney, at 14,505 feet (4,421 m) above sea level. The park is south of, and contiguous with, Kings Canyon National Park; the two parks are administered by the National Park Service together as the Sequoia and Kings Canyon National Parks. UNESCO designated the areas as Sequoia-Kings Canyon Biosphere Reserve in 1976.
The Blue Ridge Parkway is a National Parkway and All-American Road in the United States, noted for its scenic beauty. The parkway, which is America's longest linear park, runs for 469 miles (755 km) through 29 Virginia and North Carolina counties, linking Shenandoah National Park to Great Smoky Mountains National Park. It runs mostly along the spine of the Blue Ridge, a major mountain chain that is part of the Appalachian Mountains. Its southern terminus is at U.S. 441 on the boundary between Great Smoky Mountains National Park and the Cherokee Indian Reservation in North Carolina, from which it travels north to Shenandoah National Park in Virginia. The roadway continues through Shenandoah as Skyline Drive, a similar scenic road which is managed by a different National Park Service unit. Both Skyline Drive and the Virginia portion of the Blue Ridge Parkway are part of Virginia State Route 48, though this designation is not signed.
Black Canyon of the Gunnison National Park is an American national park located in western Colorado and managed by the National Park Service. There are two primary entrances to the park: the south rim entrance is located 15 miles (24 km) east of Montrose, while the north rim entrance is 11 miles (18 km) south of Crawford and is closed in the winter. The park contains 12 miles (19 km) of the 48-mile (77 km) long Black Canyon of the Gunnison River. The national park itself contains the deepest and most dramatic section of the canyon, but the canyon continues upstream into Curecanti National Recreation Area and downstream into Gunnison Gorge National Conservation Area. The canyon's name owes itself to the fact that parts of the gorge only receive 33 minutes of sunlight a day, according to Images of America: The Black Canyon of the Gunnison. In the book, author Duane Vandenbusche states, "Several canyons of the American West are longer and some are deeper, but none combines the depth, sheerness, narrowness, darkness, and dread of the Black Canyon."
The Queens–Midtown Tunnel is a vehicular tunnel under the East River in New York City, connecting the boroughs of Manhattan and Queens. The tunnel consists of a pair of tubes, each carrying two lanes. The west end of the tunnel is located on the East Side of Midtown Manhattan, while the east end of the tunnel is located in Long Island City in Queens. The tunnel carries Interstate 495 (I-495), the Long Island Expressway, for its entire length; I-495's western terminus is at the Manhattan portal of the tunnel.
The Gotthard Base Tunnel is a railway tunnel through the Alps in Switzerland. It opened on 1 June 2016, and full service began on 11 December 2016. With a route length of 57.09 km (35.5 mi), it is the world's longest railway and deepest traffic tunnel and the first flat, low-level route through the Alps. It lies at the heart of the Gotthard axis and constitutes the third tunnel connecting the cantons of Uri and Ticino, after the Gotthard Tunnel and the Gotthard Road Tunnel.
The Park Avenue Tunnel, also called the Murray Hill Tunnel, is a 1,600-foot-long (488 m) tunnel that passes under seven blocks of Park Avenue in Murray Hill, in the New York City borough of Manhattan. Traffic currently goes northbound from 33rd Street toward the Park Avenue Viaduct. The tunnel is under the jurisdiction of the New York City Department of Transportation, and carries one lane of northbound car traffic from East 33rd Street to East 40th Street; from 40th Street north, traffic must follow the Park Avenue Viaduct around Grand Central Terminal to 46th Street. The vertical clearance is 8 ft 11 in (2.72 m).
The Eastern Distributor is a 6-kilometre (4 mi) long motorway in Sydney, New South Wales, Australia which is 75.1% owned by toll road operator Transurban. Part of the M1, it links the Sydney central business district (CBD) with the Airport. The centre-piece is a 1.7 km (1.1 mi) tunnel running from Woolloomooloo to Surry Hills.
The Glowworm Tunnel is a disused railway tunnel between Lithgow, New South Wales and Newnes, New South Wales, Australia. It is notable for its resident glow-worms, the bioluminescent larvae of Arachnocampa richardsae, a type of fungus gnat.
The Chandelier Tree in Drive-Thru Tree Park is a 276-foot (84 m) tall coast redwood tree in Leggett, California with a 6-foot (1.8 m) wide by 6-foot-9-inch (2.06 m) high hole cut through its base to allow a car to drive through. Its base measures 16 ft (4.9 m) diameter at breast height (chest-high). The sign claims 315 ft. high and 21 ft. wide, but a Certified Arborist experienced with tallest redwoods, using a laser rangefinder, measured the tree as 276 ft. high and 16 ft. diameter. The name "Chandelier Tree" comes from its unique limbs that resemble a chandelier. The limbs, which measure from 4 to 7 ft in diameter, begin 100 ft (30 m) above the ground. The tree is believed to have been carved in the early 1930s by Charlie Underwood.
Mary's Rock, also known as Marys Rock, is a 3,514-foot tall mountain in Shenandoah National Park, Virginia, United States. The peak is just south of the Thornton Gap Entrance of the park, and north of the taller Pinnacle. Mary's Rock is the eighth highest peak in Shenandoah National Park.
The Wawona Tree, also known as the Wawona Tunnel Tree, was a famous giant sequoia that stood in Mariposa Grove, Yosemite National Park, California, USA, until February 1969. It had a height of 227 feet (69 m) and was 26 feet (7.9 m) in diameter at the base.
Devils Garden is an area of Arches National Park, located near Moab, Utah, United States, that features a series of rock fins and arches formed by erosion. The Devils Garden Trail, including more primitive sections and spurs, meanders through the area for 7.2 mi (11.6 km). The trailhead leads directly to Landscape Arch after a 0.8 mi (1.3 km) outbound hike, while Tunnel Arch and Pine Tree Arch can be seen on spur trails on the way to Landscape Arch. Several other arches, including Partition, Navajo, Double O, and Private Arch, as well as the Dark Angel monolith and Fin Canyon, are accessed via the primitive loop trail and its spurs.
The Robertson Tunnel is a twin-bore light rail tunnel through the Tualatin Mountains west of Portland, Oregon, United States, used by the MAX Blue and Red Lines. The tunnel is 2.9 miles long and consists of twin 21-foot-diameter (6.4 m) tunnels. There is one station within the tunnel at Washington Park, which at 259 feet (79 m) deep is the deepest subway station in the United States and the fifth-deepest in the world. Trains are in the tunnel for about 5 minutes, which includes a stop at the Washington Park station. The tunnel has won several worldwide engineering and environmental awards. It was placed into service September 12, 1998.
Shenandoah National Park is a national park that encompasses part of the Blue Ridge Mountains in the U.S. state of Virginia. The park is long and narrow, with the broad Shenandoah River and Valley on the west side, and the rolling hills of the Virginia Piedmont on the east. Although the scenic Skyline Drive is likely the most prominent feature of the park, almost 40% of the land area 79,579 acres has been designated as wilderness and is protected as part of the National Wilderness Preservation System. The highest peak is Hawksbill Mountain at 4,051 feet (1,235 m).
The Horsley Drive is a 13-kilometre (8.1 mi) urban sealed road located in the City of Fairfield in greater western Sydney, New South Wales, Australia. The road's northwestern terminus is located at the entrance of Western Sydney Parklands in Horsley Park, with its southeastern terminus located at the road's junction with Hume Highway, located in Villawood.
