Hi,

Why geological ? When I read this page, nowhere it is written "geology" or "geological" or even "geomorphology" https://en.wikipedia.org/wiki/Endorheic_lake
The definition says : it is a "collection of water", when geology is about Earth, rocks, the history of rocks and processes to change them to explain the structure of the Earth.

Every lake is in a depression of the ground so there is of course a relation between a lake and the Earth (topography).

A volcano caldeira is a geological feature because the Earth has been changed by the volcano.

The lake has changed nothing on the Earth : there was a depression, water accumulated in it.

A lake explains nothing about the Earth and its structure except maybe in one case : a glacial lake if you think that it is an ancient glacier which changed the aspect on an area, like with moraine, glacial erratic or giant's kettle.

I think it is a good idea to add the information "Endorheic lake", but geological seems not the good key, I clearly prefer the key lake.

Best regards