The Enumclaw Plateau, on which the city resides, was formed by a volcanic mudflow (lahar) from Mount Rainier approximately 5,700 years ago.
Enumclaw, Washington (Wikipedia) Enumclaw (/ˈiːnəmklɔː/EE-nəm-klaw) is a city in King County, Washington, United States. The population was 12,543 at the 2020 census.