The Oregon Dunes National Recreation Area is a special place. One of the largest expanses of temperate coastal sand dunes in the world, the stark, mist-shrouded views of dunes, forests, and ocean in such close proximity to one another are rare and hauntingly beautiful. Many plants and animals, including some found in few other places, call this area home. In 1972, Congress designated this 31,500-acre portion of the Siuslaw National Forest as a National Recreation Area in recognition of its unique values.
Source: usda.gov
If I understand correctly these dunes served as the inspiration of the book “Dune” by Frank Herbert