Darwin Lake Isabela Island (Galapagos, Ecuador)
This is Darwin Lake, a small lagoon in a crater very near Tagus Cove that is thought to have been formed by a tidal wave when a volcano on Fernandina Island (in the background) erupted. The lake is a very unusual feature being slightly above sea level and twice as salty as sea water. As water evaporates from the lake, water is replenished from the sea via the porous rocks that separate the sea from the water in the crater. There is a line of salt encrustation along the water's edge of the lake.
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Username: Thomasjuergenrichter
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Width: 4752 pixels
Height: 3168 pixels
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Image ID: 71989888