Site D on published map. This is a large, very heavy table-like slab, supported by several small stones on a ledge. The slab is elevated no more than 6-8 " off the ledge surface.
Still, it must have taken considerable effort to manouver the slab onto its supports.
The top surface of the slab contains two long curved grooves that appear to be deliberately carved rather than the result of weathering or cracks. This is the only structure like this in the park. And there are very few, if any, like it in New England that I can recall.
Something is not right. This message is just to keep things from messing up down the road