The Cupola Fire Ring is our simplest fire pit. It's a simple bottomless steel ring made of 1/8" thick steel with sloped side panels. The unique Cupola shape grows from a square base to an octagon at the top, designed to contain the fire while allowing for great airflow. You can use this ring standalone, just pop it on the ground and fill with some gravel, or use it as a liner for a masonry liner. The steel ring will protect the bricks or stone from the brunt of the fire's heat and prevent them from cracking.