rising dune

The force of the wind can blow enough sand to the base of a cliff to push a dune partway up the cliff face, forming a rising dune. Similarly, wind can blow a dune at the edge of a cliff over the side to pile up a falling dune at the base. The best examples of rising dunes are on the Navajo Indian Reservation of northwestern New Mexico, northeastern Arizona, and southwestern Utah.

D. J. Waldie