The Mysterious Mima Mounds

December 2, 2021

Thousands of bubble-like mounds of grass are found on a grass field near Olympia in Washington, DC, in the northwest. These humps are called Mima Hills, also known as Mima Prairie, and are more than two meters high and large. Ever since the discovery in 1841 by Charles Wilkes, a U.S. Navy officer and explorer,…