Mima Mounds Natural Area Preserve

Mima Mounds Natural Area Preserve
Mima Mounds Natural Area Preserve
LocationSouthwest corner of Thurston County, Washington, United States
Nearest townLittlerock, WA
Coordinates46°53′N 123°03′W / 46.89°N 123.05°W / 46.89; -123.05
Area756 acres (306 ha)
Established1976
Governing bodyWashington Department of Natural Resources
Websitewww.dnr.wa.gov/MimaMounds

Mima Mounds Natural Area Preserve is a state-protected Natural Area in the southwest corner of Thurston County, on the outwash plain of the Vashon Glacier. It was established in 1976 to protect examples of mima mounds.

The site comprises 756 acres (306 ha) of Garry oak woodland, oak savanna, and prairie grasslands.

There are approximately 8-10 mounds per acre, measuring 1-7 feet in height and having a diameter of 8-40 feet.

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