An approved fire pan is a durable, metal pan at least 12-inches x 12-inches wide, with at least a 3-inch lip around its outer edge and sufficient to contain a fire and its remains. Visitors must elevate fire pans off the ground to prevent scorching of the soil. If the fire pan does not have legs to elevate it, rocks must be placed underneath the corners of the fire pan. All ash must be removed and carried out of the river corridor in a sealed container or durable bag.