Terminal moraines

[Dorothey Allen]

the large mass of rocks and dirt that is left by a melting glacier (= a large mass of ice) at its furthest point of movement

[Couch Potatoe]

A terminal moraine, also called end moraine, is a type of moraine that forms at the snout (edge) of a glacier, marking its maximum advance. At this point, debris that has accumulated by plucking and abrasion, has been pushed by the front edge of the ice, is driven no further and instead is deposited in a heap.