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The lowest level occurred at the Permian-Triassic boundary about 250 million years ago. During the most recent ice age (at its maximum about 20,000 years ago) the world's sea level was about 130 m lower than today, due to the large amount of sea water that had evaporated and been deposited as snow and ice, mostly in the Laurentide Ice Sheet ...
This is a list of places on land below mean sea level. Places artificially created such as tunnels, mines, basements, and dug holes, or places under water, or existing temporarily as a result of ebbing of sea tide etc., are not included. Places where seawater and rainwater is pumped away are included.
Badwater Basin is an endorheic basin in Death Valley National Park, Death Valley, Inyo County, California, noted as the lowest point in North America and the United States, with a depth of 282 ft (86 m) below sea level. [1] [2] Mount Whitney, the highest point in the contiguous United States, is only 84.6 miles (136 km) to the northwest. [3]
The lowest undersea highway tunnel is the Ryfast tunnel in Norway, at 292 m (958 ft) below sea level. by train, excluding tracks in mines, is located in the Seikan Tunnel in Japan, at 240 m (787 ft) below sea level. For comparison, the undersea Channel Tunnel between England and France reaches a depth of 115 m (377 ft) below sea level.
Death Valley's Badwater Basin is the point of lowest elevation in North America, at 282 feet (86 m) below sea level. [1] It is 84.6 miles (136.2 km) east-southeast of Mount Whitney – the highest point in the contiguous United States, with an elevation of 14,505 feet (4,421 m). [4]
These island countries also have the smallest range between their lowest (sea level) and highest points, and are very sensitive to changes in sea level. The highest and lowest points in China constitute the greatest elevation range within any single country at 9,002 metres (29,534 ft).
It is the lowest freshwater lake on Earth and the second-lowest lake in the world (after the Dead Sea, a salt lake), [3] with its elevation fluctuating between 215 and 209 metres (705 and 686 ft) below sea level (depending on rainfall). [4] It is approximately 53 km (33 mi) in circumference, about 21 km (13 mi) long, and 13 km (8.1 mi) wide.
The Danakil Depression is the hottest place on Earth in terms of year-round average temperatures. It is also one of the lowest places on the planet at 100 metres (330 ft) below sea level, [7] and without rain for most of the year.