What is an esker?
Correct answer: Glacier debris

I am not a number.
Player #25874027, the ones running along the edge of the glacier are called lateral moraines.

Player #25874027
little b,
I’ve heard of moraines which I believe are the ridge of debris that the glacier bulldozes along the front edge . I haven’t heard of an esker . But that’s hardly surprising when in the notes it states the most famous is actually called an EISCIR !!
Make up your mind and phrase the question properly!