- Gilliam County, Oregon (data.census.gov)
Gilliam County, Oregon has 1,204.7 square miles of land area and is the 24th largest county in Oregon by total area. Gilliam County, Oregon is bordered by Wheeler County, Oregon, Wasco County, Oregon, Morrow County, Oregon, Sherman County, Oregon, and Klickitat County, Washington.
- Glacial erratic boulders of Island County, Washington (Wikipedia)
Glacial erratic boulders in Island County are a remnant of the Pleistocene glaciation that created Puget Sound and transformed the surfaces of what are now Island County’s main landmasses: Whidbey Island and Camano Island. South of Deception Pass, the two islands’ surfaces and beaches are completely composed of glacial till. Abundant glacial erratic boulders lie on the islands, their beaches, and under the near-shore waters.