Curbstonehenge

Looks like some time traveler has built the ruins of an IDTT in Amherst Massachusetts. It's a circle of stones, marking the cardinal points and the sunrise and sunsets of the solstices. We can tell those stones are heavy with a little math. A granite block measuring 35cm x 15cm x 102 cm. at the average density of granite at 2.75 g/cm³ is 324lbs. It looks like they were moved into place using rollers, sledges and levers. The Neolithic megaliths of Western Europe were probably moved in a similar way.



This is a panoramic of the circle. The center platform can be seen in the middle. The small stone in the foreground is the north stone. The small stone in the far back is the south stone. The two large stones on the right side of the circle are sunset stones for the winter and summer solstices. The two large stones to the left are sunrise stones for the same.