Ape Caves is the longest lava tube in continental United States. Unusual and unique as liquid basalt flows are rare in this region of stratovolcanoes.
The 13000+ foot long Ape Caves are named in honor of the Boy Scouts who originally explored the caves after their discovery in 1947. The Apes were an organization of foresters who sponsored the Scout Troops . Ape Caves is located at the southwest foot of Mt St Helens.
Very interesting. I will learn a lot by the time you reach Z. Thanks.
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