Each natural andesite stone (a type of basalt) fire pit is unique and is hand cut from a single piece of stone. Typical sizes range from 30-40" x 24-28" x 16" tall. This product is designed primarily to sit over the top of a stubbed up gas line (natural gas or propane) with the connection to the gas made inside the fire pit. Not only is the connection simple, the operation is simple too: light the fire with a long lighter and adjust the flame height with a simple key valve.