Lava flow and big volcanic crater outside of Jordan Valley. Coffeepot crater I think it's called. Close to there is a rafting takeout and ranger station on a piece of ground that used to be a farm. Big water wheel down on the river they used for irrigation, a bunch of old equipment including two old trucks with hay forks off of the rear end. Self unloading, steering column modified to face the rear. Real farm smarts there. They recommend 4wd/awd only on the road that goes down to the river. Beautiful canyon going down there too. This stuff is surrounded by the most desolate expanse of land in the country. It will kill you.