In Central Oregon there's Lavaland…and in and around Lavaland there are many cool things to explore. The landscape is harsh and craggy and there are lava tubes and obsidian fields and lava forests.
At the top of the Lava Butte Cinder Cone, they have several little 8×10 wooden placards showing you where you should take a photo. I took a photo of the sign instead:
We explored Lava River Cave again (the day it opened for the season, apparently). Here's a photo from a little bit inside the cave looking at the entrance:
And here's a shot of a nice ice stalagmite just inside the entrance….not technically a stalagmite, I know.