Carl Ferreira of Tiverton describes the stones on the Pocasset Ridge Trail that he believes held special significance for the Native American people who occupied the land. The two-mile trail leads to several rocks, one of which on the left can be rocked to produce a drumming sound that can be heard at great distances. He pointed out another rock perched on a granite outcropping as well as rocks piled in undulating shapes that mimic a snake and that would have been useless to retain farm animals. Carl examined another rock formation that may have been used for healing ceremonies as well as a field of smaller rocks that litter the crest of the hill. Click here for a 12-minute video of the stones on the Pocasset Ridge Trail in Tiverton described by Carl Ferreira. (Photo. left: A balanced or perched rock sits atop two smaller rocks that were clearly placed there by humans.)