Interpretation and history at Beacon Rock

History

"Beacon Rock" was originally named by Lewis and Clark on their expedition to the Pacific Ocean on October 31, 1805. It was near Beacon Rock that they first measured tidal influences from the ocean on the Columbia River.

In 1811, Alexander Ross of the John Jacob Astor expedition called the rock "Inoshoack Castle." The rock was known as "Castle Rock" until, in 1916, the United States Board of Geographic Names restored the name "Beacon Rock."

Henry J. Biddle purchased the rock in order to build a trail to the top. The trail was built, and in 1935 his heirs turned the rock over to the state for use as a park. Additional development was done by the Civilian Conservation Corps.

Interpretive opportunities

The park offers a one-mile interpretive trail at the Doetsch day-use area. The trail is ADA accessible. Additionally, there are interpretive signs about the Ice Age floods along the Beacon Rock Trail.