Beacon Rock, on the Washington Side, is 800 feet high. It was named by Lewis and Clark, who first detected tidal water at this point 141 river miles upstream. Our captain attempted to anchor in this bay, but found it too shallow.

From: Washington State Parks Website - Beacon Rock, 2001 Beacon Rock is the core of an ancient volcano. The ice-age floods through the Columbia River Gorge eroded the softer material away, leaving this unique geological structure standing by itself on the banks of the Columbia River.