All plants, animals, and archeological objects are protected by federal law. There are substantial fines for disturbance, damage or removal.
Fire danger can be high at any time of year. Stay informed of local conditions and possible fire restrictions. Use your ashtray.
Storms can arise quickly. If there's lightning, take cover.
Please stay on designated trails, for your protection and to prevent damage to fragile resources.
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.
Park roads are narrow and winding, with soft shoulders. Stop only in designated pullouts. And watch the temperature. At this elevation, road surfaces freeze quickly in winter.
Speed limits are reduced for the protection of pedestrians and wildlife. Please watch for both.