I will try and get to St. Mary's in Jamesville and the OCC area in the next week to do a survey.
Here are a few links some of you asked about:
North England Antiquities Research Association (NEARA) has pictures and articles about rock formations, stone chambers, etc. in New England: http://www.neara.org/
American Society of Dowsers (ASD); information on dowsing, listing of dowsers, good place to buy dowsing (L) rods, artcles, etc.: http://www.dowsers.org/
Sig Lonegren well known for his knowledge of earth phenomena has a great book on learning how to dowse, Spiritual Dowsing, that can be accessed online for free: http://www.isleofavalon.co.uk/spiritualdowsing.html
Rock Piles is a blog about rock formations--cairns, chambers, formations, fences, etc...in the North Eastern USA: http://rockpiles.blogspot.com/