The stone row is visible in satellite imagery, and made its appearance in August 2010, when the level of South Watuppa Pond fell drastically.
On the shore of Cranberry Neck facing north are three short stone rows.
Two of these have features suggesting manitous. There is a manitou standing on the row in the center of the above photo.
This property now belongs to the Fall River Rod and Gun Club. Originally, it belonged to Benjamin Church, who fought in King Philip's War with the Pocasset Wampanoags. The Pocassets originally lived about the Watuppas, and were granted lands on both sides of the ponds after the war, but later moved to Watuppa Reservation. Cranberry Neck was deeded to William Borden in 1727, and the Bordens farmed the land for about 200 years. The land was then deeded to the Fall River Rod and Gun Club. The Club has done minimal "improvements" to their property, and it looks like unspoiled forest from the water.
The pond level was raised in 1826, when the Troy Dam was raised two feet. Since this was an addition to an existing dam, it's possible the original pond level was even lower. This is a section of the map of pond depths I used previously. The edge of the red area closer to shore represents 5 feet in depth. The original shoreline may have been closer to the 5 foot mark, and the very shallow area at the Christopher Borden Brook outlet would have been mostly dry land. The stone rows would have been out of the water, and the island would have been considerably larger, as the water around it is shallow.
Here is my interpretation of the view from the island, looking towards Cranberry Neck, with the water about two feet lower than today. I painted this in 2011, and incorporated the present-day appearance of the shore.
The long curved stone row may have been built from rocks cleared from the shallow area directly east of it. This area may have been used as a summer campsite.
Here is my interpretation of how the area may have looked originally, to someone walking on top of the stone row.