Mark a 3-foot-wide circle on level ground, at least 10 feet from any structure or trees.
Dig 3–4 inches deep inside the circle, then fill the base with gravel and pack it flat using a tamper.
Arrange the first ring of bricks tightly around the edge, ensuring they sit evenly.
Add a second layer, staggering the bricks over the joints for strength. Then use adhesive if desired.
Stack one more layer to reach about 12–15 inches tall, checking that each brick is aligned.
Spread a thin layer of gravel inside the pit to protect the ground and improve airflow.
