Westford "Stone Sanctum"?

Visited an intriguing site in Westford, MA this weekend with Scott Wolter and his wife Janet. The site is comprised of a series of white rocks arranged in a specific pattern that appears to be ceremonial. The arrangement looks like a dandelion after it has turned white, with a stem (in this case 8 white rocks arranged in a row) leading to an orb (in this case a circle of white rocks). In the center of the circle is a large white boulder. The arrangement is oriented west to east, in the traditional layout of a Christian church (assuming the path to be the nave, the circle to be the apse, and boulder to be an altar). The arrangement is normally under water, but is visible now due to last summer's drought. The site has a number of features which make me think it is ceremonial: the orientation, the use of white rocks, its proximity to water, the church-like layout, and the use of 8 steps (8 being a sacred number to many groups). It is also close to where we think the Prince Henry Sinclair group would have traveled before climbing Prospect Hill to the Westford Knight site. Thanks to Wayne Wagner for calling this to my attention. He heard about this from Cori and Bill Ryan. Photo credits: Cori Ryan, GoogleEarth.

UPDATE 4/24/17: After bringing several Native American tribal elders to view the site, we now believe it may be a "women's circle" where women gathered monthly (they may have waded out in the shallow water to do so). If so, the site would likely predate the late 1600s, after which few Native Americans lived in Westford. The layout--a pathway leading to a circle--may represent the birth canal and womb, with the alter in the center perhaps representing the child. This would be similar to other Goddess fertility sites around the world which also use the "stick and ball" or "balloon" design to symbolize the birth canal and womb.