Inferno Cone
A short, steep climb up black cinders for a great view.
Craters of the Moon
A huge black lava sea with cinder cones and caves in Idaho. Apollo astronauts trained here.
This is a landscape of black lava so strange that Apollo 14's astronauts practiced geology here. A 7-mile loop leads to the Inferno Cone and lava tube caves that you can walk through, with a free permit.
- Best Time
- May–June and September–October
- Time Needed
- Half a day
- Cost Level
- $$$$
- Open
- Check before you go; hours vary by season
- Getting There
- About three hours by car east of Boise.
What to See
0 of 2 are freeIndian Tunnel
A big lava tube cave; get the free permit at the visitor center.
Know Before You Go
- It's hot and has no shade in summer, and the road closes in winter.
Where to Stay
Stay in Arco, Idaho, or Sun Valley.
Where to Eat
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Last checked 2026-11-02. Part of the Rocky Mountains list.