Mt. Rainier National Park: Summerland Trail

http://www.nps.gov/mora/planyourvisit/upload/summerland-trail-sep11.pdf

Mt. St. Helens: Ape Cave: Gifford Pinchot National Forest

Longest in continental us, third longest lava tube in north america. 13,042ft.

Cave temperature 42f/5.6c

Government site: http://www.fs.usda.gov/recarea/mountsthelens/recarea/?recid=40393

http://www.mountsthelens.com/ape-caves.html

Named after local outdoor club who found it in the 50s

The Ape Caves are located on the south 
side of Mount St. Helens and accessed through Woodland - go up highway 503 
past Cougar.  Driving time from I-5 and highway 504 where all the Mount St. 
Helens Visitor Centers are to the Ape Cave is just over an hour.   The Ape Caves 
are open year-round though the parking lot gets snowed in during the winter.

Mt. Hood National Forest: Cloud Cap Wilderness

Crater Lake National Park: Cleetwood Trail

Redwood National Park: Redwood Creek Trail

Check out: http://www.redwoodhikes.com/RNP/RedwoodCreek.html for more great info on Redwood Creek Trail.

Yosemite National Park: Vernal Falls

Yosemite National Park: Pohono Trail

Check out: http://www.yosemitehikes.com/glacier-point-road/pohono-trail/pohono-trail.htm for more great info on the Pohono Trail.