Yesterday Ro & I visited Beaver Swamp, parked at the end of the pot-holed dirt road, walked across the earthen dam and thru the wooded "island". Lots of questions: who built that dam? when? What for? It's in the middle of nowhere, didn't see signs of a mill, doesn't look like cranberry bog country. Yet it took a LOT of work to build that dam. And where did all that fill come from, no borrow pit was obvious?