Heres what we do with a dutch oven.
1. Dig a hole about 3 feet down and large enough for your dutch oven to fit in.
2. put a few large rocks down that throw some charcoal on the rocks.
3. Place your dutch oven down in the hole over the charcoal.
4. You can use any meat you like, such as pork roast, venison etc. Add an inch or so of water to the bottom of your oven, add potatoes, carrots or whatever veggie you like. Seasoning to your liking.
5. Make sure your lid seals good. You can use aluminim foil for extra protection.
6. Put charcoal and than rocks over top of oven.
7. Now cover the hole back up with sand or dirt or whatever. The coals heat the rocks up and the heat stays in a long time.
8. Depending on the size of your roast and how many coals you placed your meal will be ready in 4-6 hours. Believe me it is well worth the work.