 | | Arco, Idaho | | Includes Howe, Leslie, and Mackay | |
| | Mountain Biking | | |
| | Craters of the Moon National Monument and Preserve - Mountain Biking In National Monuments | | Craters of the Moon National Monument and Preserve contains three major lava fields of well preserved volcanic features covering almost half a million acres. There is a visitor center, campground, several trails, and restrooms. |
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