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Ape Cave Geologic Site
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Thought to be the longest lava tube in the Western Hemisphere, the 12,810-foot tunnel was found within a massive lava flow that oozed from the volcano almost 2,000 years ago. Flowing downhill, the stream of lava cooled and formed a hard crust atop the hot lava. In time the lava drained and left an intricate, winding lava cave behind.The cave was first explored in 1946 by the St. Helens Apes - the local Boy Scout troop for whom the cave is named. Visitors should have three light sources, sturdy shoes and a jacket; the temperature is about 42 degrees Farenheit.
Plan your vacation to the Pacific Northwest with a packet of information in the mail and you may win a $200 gift certificate courtesy of our sponsors.
Telephone
206-247-5473
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