Plymouth Rock News you can use. Plymouth Rock is center stage on PlymouthRock.org. It’s been almost one hundred years since the last big celebration in Plymouth Massachusetts for the Arrival of the Pilgrims, and the planning of the 400th anniversary is well underway at Plymouth 400. We think a celebration this grand requires song. We have created a fun way to celebrate Plymouth Rock and the Landing of the Pilgrims at your school. It’s called, Rockin’ The Secrets of Plymouth Rock Assembly based on Diane L Finn and Erin Finn Zell’s “The Secrets of Plymouth Rock”. The story is told by the Rock itself.