Our fire circle. All that was really needed was a clear spot on the ice to put the fire pan/metal garbage can lid. We started with two seats and later rapped around the third bench connecting them. Theoretically you can pile up snow, let it sit, come back and carve it out and it'll be solid. It ended up being a little two warm for the snow to set so it didn't quite work as the benches collapsed when they were sat on.