Looking at the various msg. on the subject brings to mind something they have done for centuries in Maryland. The Eastern Shore (of the Chesapeake Bay) is very flat, it is just a few feet above sea level and in addition to that there is a huge aquifer of fresh water just a 100 feet or more below ground level. This is mostly farm land and what they have been doing is piling up the soil of the highest part of the farm, so you see these raised burial grounds rising up in the middle of corn or soy bean fields . This is necessary for most of the Eastern Shore except for a few areas as the buried bodies floated up to the surface. Gordon