Beacon Rock
Posted by: 
Hikenutty
N 45° 37.729 W 122° 01.297
10T E 576263 N 5053273
Between 12 and 15 thousand years ago the Missoula Floods eroded away the softer outer material leaving visible the harder olivine basalt plug that Beacon Rock is composed of.
Waymark Code: WM1F29
Location: Washington, United States
Date Posted: 04/24/2007
Views: 75
Between 12 and 15 thousand years ago the Missoula Floods eroded away the softer outer material leaving visible the harder olivine basalt plug that Beacon Rock is composed of. It rises 840 feet above the Columbia river and has a trail (with handrails) leading to its top.
Beacon rock was first seen and named by caucasians by Lewis and Clark. They named the rock "Beaten Rock", appropriate considering how the rock we see today looks this way thanks to the beating it took from the Missoula floods.
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