I've done a fair amount of pit cooking, but as I mentioned, never without a heat source. The source either being coals or hot rocks.

On a side note, it's fun to show people how to cook spectacular food with primitive methods. Some folks are dumfounded by how good it tastes.

At Tracker School earlier this year, I learned a bunch of primitive methods that were new to me and that I can't wait to try!

Thanks for the link though!