Some rocks in the woods remind you of an animal or a face. Here is a Stone Turtle on Acton Conservation land. Rocks with a prominent head like this are called "Turtles" because of the importance of the turtle in Native American creation myths. This figure looks more like a ram. It is four feet long and faces north. There is every reason to believe Native Americans would have been sensitive to unusual rocks like this. Many of them may be natural, but the ones pictured here have some breakage around the "head" suggesting that nature was enhanced deliberately.

 
 



 
Here is another Stone Turtle from Lincoln (walk in along the fire road across Rt. 2 from Orchard Road, take the first left, it is within 100 yards). Although these figures sretch credibility, the purpose is not to convince but to suggest that such figures may have had a ceremonial meaning in the past.
 
At Great Brook Farm in Carlisle there are supposed to be several large stone turtles and here is a link to an interesting tobacco offering stone in Connecticut,  under the topic  "Connecticut Bear Stone" in the table of contents.
 
 

Another example from Acton, south of Nashoba: