Just a heads up. Never use sedimentary based rocks for a fire base. (they're quite porous and can absorb water) I recall having a big fire that exploded on me, sending chunks of rock everywhere. Adrenaline is definitely brown.
@@DWA1 Glad to hear that, and hope you never do. Apparently the moisture in the rock expands under the heat (think steam boiler)and shatters the rock. Scared the s... out of us.