Time tested, Lava Rock is proven to increase combustion efficiency, while maintaining a classy look for any fire pit. Each piece of rock varies in size from 2" like a golf ball, down to 1" like the size of ping-pong ball. Sold in 25 pound bag equivalent to a 1/2 cubic foot. An excellent base for one of our specially designed fire pit inserts and outdoor log sets or decorative glass media.
