Plymouth Rock Facts
The top (visible) 1/3 of Plymouth Rock weighs approximately 4 tons. The bottom portion (beneath the sand) weighs approximately 6 tons. The rock as it exists today is estimated to be only about 1/3 to 1/2 of its original size - the top half has been dragged around town, broken, chipped away at by 18th and 19th Century souvenir hunters. The longitude of Plymouth Rock = 70° 40'
The latitude of Plymouth Rock = 41° 57' 30"