Lava River Cave – BEND, OR

Sound on. This underground hike was extremely worthwhile. If you’re ever in the highdesert of central Oregon check it out. You can hike a mile down a cavernous tube carved by molten magma thousands and thousands of years ago. It’s pitch dark so you rent powerful lanterns to look at the rocks and contemplate geologic time and your relationship to the planet.

http://www.oregon.com/attractions/lava-river-cave

https://www.fs.usda.gov/recarea/deschutes/recarea/?recid=38396