Site of the original Plymouth Colony in Massachusetts (42.0N, 70.5), This detailed photo is rich in early American history. Plymouth Rock, the Pilgrims first stepping stone on North America and site of Plymouth Colony is located just behind the natural breakwater on the south shore of Plymouth Bay seen in the middle of the photo. The through canal to the south is part of the Intercoastal Canal system. Cape Cod is just south of the canal.