An acre is defined as 4840 square yards; it sounds big, but it isn't. A square 210 feet (70 yards) on a side is approximately one acre. A parcel 1/4 mile on a side is 40 acres. An acre is not all that big a piece of land for the purposes we are considering. The standard Kingdom Lists are 100' by 200' and are approximately 1/2 acre. The central camping area around the Eric at a usual Kingdom event is about three acres. Recent experience has shown us that we are using at least three times that area in total camping unless we are really crowded.