We had 1 night layovers as we travelled east which were decent, clean and not terribly memorable RV sites. On the way to a 2 night stay in Arco ID, we went by the Craters of the Moon National Monument and Preserve. This is worth the stop if you are in the vicinity of SW ID. It’s an enormous field of several old and older lava flows, including cinder cones and splatter cones that you can get right on top of. It isn’t a large place for visiting – the visitor center is modest though the videos shown are worth watching. And the loop drive is about 7 miles so a 1-2 hr visit will easily get in all the sights. We did not go to the lava tube caves but they may be worthwhile as they are good sized. Check in for the permit needed
The area is 750,000 square miles in size and encompasses a number of lava flows from a series of deep fissures, known collectively as the Great Rift that cross the Snake River Plain and started forming approximately 15,000 year ago. It’s easy to spot the lava types – the smooth, rope-like pahoehoe lava, and the crusty rubble like “aa” lava. Both are Hawaiian words.
We walked to the top of the Inferno Cone where there were vast views of the cinder cones along the Great Rift. In the distance is Big Cinder Butte which we saw throughout our visit to Arco. It’s enormous and is one of the world’s largest basaltic cinder cones. Also in the view were the nearby spatter cones which were the next stop on our tour.
The spatter cones represent fissures and small eruptions that create a miniature volcano. The ejected globs of sticky lava don’t travel far so they create a small cone of basaltic lava.
It was a short drive to the RV site and store for a quick provisioning. We stayed 2 nights at a clean and quiet spot. The restaurant onsite is very good though we forgot to put in an order for the famous ribs and by the time we showed up they had been sold out. The alternatives we picked were really good, especially the “smoked” baked potato. Wish we could find these again…. Incredibly good!