Quoting S. Hart Wright's 1879-80 work, they, too, described "graded ways...bordered by large flat stones edgeways leaning toward the center of the ways; compartments or rooms which varied in dimensions; rectilinear division of structure into units, some of which exceeded 500 feet in length; upright stone slabs arranged in circles, squares, and arcs; and eight-foot-high monolith; depressions which indicated possible roofport holes."