Salvelinus umbla, also known as lake char, is a species of char found in certain lakes of the region of the Alps in Europe.
An alpine lake is a high-altitude lake in a mountainous area, usually near or above the tree line, with extended periods of ice cover. These lakes are commonly glacial lakes formed from glacial activi
Blanca Lake in Washington, USA with the characteristic greenish water from glacial flour. The Columbia Glacier seen in the background is the main water source for this lake.
Alpine Lake, in the Cerro Blanco Mountains, Colorado, 1874. Photographs of the American West, Boston Public Library
A newly formed (ca 2015) alpine lake on the terminus of the Ice Worm glacier on Mt. Daniel in Washington, USA resulting from glacier recession.
Lake Cadagno in the Swiss Alps is a naturally meromictic alpine lake due to saline input from groundwater.