Burail Chambers can be found throughout the Black Forest. Some have a below ground level entrance, and others look like a Stonehenge with a stone roof, both are usually guarded by 2 skeletons. Skeletons are very weak to blunt weapons, so make a club or mace to take with you. A torch is very handy, but if one does not pick the yellow mushrooms they provide enough light to see around. Make sure to check the ground and corners of rooms you enter as valuable gems are laying about, and go in with an empty inventory. You can also use the chests inside to hold non-valuable items to make room in your inventory. The chests generally contain flint-arrows, torch and gems.