A fire ring is a special kind of circle made out of metal or stone that is filled with rocks or gravel. People build these rings when they want to make a campfire outside. The rocks or gravel around the fire inside the ring help keep the fire contained in one place so that it does not spread out and cause harm. Fire rings also make sure that the fire is under control and safe for people to sit around and enjoy. So, the fire ring is like a special border that helps keep the fire where it’s supposed to be and keeps everyone safe.