A Dakota Firehole or as I like to call it - a dirt rocket stove is a great way to primitive camp fire. It reminds me a lot of how a rocket stove is built in how you feed the wood. Getting good oxygen is the key to a smoke free fire and this does that for sure. It is also very easy to cover up and make safe when you leave.
The guy is obviously not a Missouri native - but his methods work. Check it out.