Early Lake Erie was a prehistoric proglacial lake that existed at the end of the last ice age approximately 13,000 years ago.
Novak speculates that the rift leads to a buried prehistoric lake.
The pictographs were painted on the cliff when a prehistoric lake submerged the bottom.
Evidence of this prehistoric lake can still be seen in the topography of the county today.
These sediments are the remains of extensive prehistoric lakes, which covered the Altiplano during at least five glaciation periods.
Along with Bear Lake proper, the marsh was once part of a larger prehistoric lake that filled the valley.
As he had researched the geologic lake which once filled the Connecticut River basin, this prehistoric lake was named after him.
The Salar was formed as a result of transformations between several prehistoric lakes.
Some 30,000 to 42,000 years ago, the area was part of a giant prehistoric lake, Lake Minchin.
The youngest prehistoric lake was Coipasa, which was radiocarbon dated to 11,500 to 13,400 years ago.