Spatter Cones Craters of the Moon
Additional Details:
This interesting scenic attration is about 25 miles southwest of Arco on the Idaho Central Highway, easily accessible to tourists on the way two or from Yellowstone National Park. Spattercones were formed by an accummulation of molten lava expelled by gas pressure in the form of "lava clots". There are numerous cones, caverns, natural bridge formations, tree molds, etc |