Storms can arise quickly. If there's lightning, take cover.
Watch where you walk - lava is sharp, brittle, and unstable; cinders can be slippery underfoot. On either surface, a fall is an unpleasant experience.
This is dry country. Carry water with you and in your vehicle.
Speed limits are reduced for the protection of pedestrians and wildlife. Please watch for both.
Did You Know?
Sunset Crater was nearly dynamited in 1929, to create a landslide for the Hollywood movie "Avalanche". Local citizens were outraged and lobbied for its protection. The result was establishment of Sunset Crater National Monument in 1930. "Volcano" was added to the name in 1990.