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Ape Cave Lower Entrance

Cougar, Washington

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Fun Facts

Stretching over two miles, Ape Cave was formed approximately 2,000 years ago by lava flows from Mount St. Helens.

The cave was named after the Mount St. Helens Apes, a local Boy Scout troop that explored the cave in the 1950s.

The lower cave is an easy walk suitable for families, while the upper cave offers a more challenging adventure with rock piles and an 8-foot lava fall.

Visitors can observe fascinating formations like lava stalactites and stalagmites, which are rare in lava tubes.

The cave maintains a cool temperature of about 42 degrees Fahrenheit, making it a refreshing escape during summer months.

The cave provides a habitat for unique cave-dwelling organisms, including some species of bats and insects.

This forest is one of the oldest national forests in the United States, offering diverse ecosystems and recreational opportunities.

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