Thursday, August 4, 2011
USA - Oregon - Crater Lake National Park (1)
CRATER LAKE NATIONAL PARK
The remains of a dike in the oldest part of the caldera wall, appears to float on Crater Lake. Best views of the Phantom SHip are from Sun or Kerr Notches on East Rim Drive.
Sent by Darryl from Ohio, USA.
This is from Wikipedia :
The lake is 1,949 feet (594 m) deep at its deepest point, which makes it the deepest lake in the United States, the second deepest in North America and the ninth deepest in the world. However, when comparing its average depth of 1,148 feet (350 m) to the average depth of other deep lakes, Crater Lake becomes the deepest in the Western Hemisphere and the third deepest in the world. The impressive average depth of this volcanic lake is due to the nearly symmetrical 4,000-foot (1,200 m) deep caldera formed 7,700 years ago during the violent climactic eruptions and subsequent collapse of Mt. Mazama and the relatively moist climate that is typical of the crest of the Cascade Mountains.
The caldera rim ranges in elevation from 7,000 to 8,000 feet (2,100 to 2,400 m). The United States Geological Survey benchmarked elevation of the lake surface itself is 6,178 feet (1,883 m). This National Park encompasses 183,225 acres (286.29 sq mi; 741.49 km2). Crater Lake has no streams flowing into or out of it. All water that enters the lake is eventually lost from evaporation or subsurface seepage. The lake's water commonly has a striking blue hue, and the lake is re-filled entirely from direct precipitation in the form of snow and rain.