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?
The eruption of Sunset Crater Volcano must have been a powerful event. It destroyed all plants within a 5-mile radius. A fountain of fire, 850 feet high, was visible for miles around. An ash cloud rose 2.5 miles into the sky, and falling ash covered about 64,000 acres.