The most noted features of Sleeping Bear Dunes National Lakeshore are the immense dunes, high bluffs and dune plateaus that are the remarkable landmarks that run along the shoreline of the park. The towering headlands of Empire Bluffs, Sleeping Bear Bluffs and Pyramid Point are glacial moraines that once protruded further into Lake Michigan but are now eroded by wind and waves over thousands of years into the steep faces that are such prominent landmarks. As waves cut away the bases of the bluffs exposing a continuous supply of sand and gravel to the winds that blow against at them, the sand is continually moved upward and deposited on top. These are called perched dunes as they are sitting atop the already high moraines. The Sleeping Bear Plateau is a dune field about five miles long and three miles wide composed of these dunes.
Many other dunes along the coastline are formed of Lake Michigan beach sand. These dunes also reach far inland as sand is blown in the wind. These dunes are undulating as they move inland over time through the series of beach and foredunes with pioneer vegetation that can adapt to the dry and windy conditions such as Marram grass, Pitcher’s thistle, bearberry, sand cherry, and beach pea. Further inland are higher backdunes with more mature and stabilizing trees and shrubs such as jack pine, cottonwood and oak with juniper and buffalo berry shrubs.
