Mark a circle about 4 feet in diameter on the ground using marking paint or a rope. This will define the outer edge of your fire pit.
Dig down about 4 inches and fill the space with a layer of sand. You compact it to create a stable, even surface.
Lay your first ring of concrete blocks in a circle to form the outer wall. Then add a smaller, second ring inside (about 2.5 feet wide) to create the inner pit.
Pour gravel in between the two rings to help with drainage and add a polished finish.
Stack a second layer of blocks on both rings, staggering the joints for added strength.
Check that the pit is level all around. Fill the inner pit with a thin layer of sand to protect the ground from heat.
