Castle Rock, Washington
"Castle Rock, a city in Cowlitz County. In 1853 William Huntington gave that name to a huge solid rock, 150 feet high, covering more than an acre and having the appearance of an old castle. The rock was on his government donation land claim. When a settlement and town developed there, it very naturally took the same name....."Lewis and Clark gave the name of "Beacon Rock" to a large rock in the lower Columbia River. It was later called Pillar Rock, and often goes by the name Castle Rock. This same name has also been given to a number of less important geographic features in the State." Origin of Washington Geographic Names, 1923.