Wikipedia contributors. (2025, November 3). Glacial erratic boulders of King County, Washington. In Wikipedia, The Free Encyclopedia. Retrieved 00:19, December 3, 2025, from https://en.wikipedia.org/w/index.php?title=Glacial_erratic_boulders_of_King_County,_Washington&oldid=1320247183
Big Tree Ridge (wta.org) The Big Tree Ridge Trail is an accessible, high-quality trail with moderate grades — excellent for new hikers.
Glacial erratic boulders of King County, Washington (Wikipedia) Glacial erratic boulders of King County are large glacial erratic boulders of rock which were moved into King County, Washington by glacial action during previous ice ages.