sentences:  A second ice flow in 1918 piled up , knocking the house from the piles and destroying it.Although consideration was given to using a caisson structure, it was decided instead to reuse the house from the Cherrystone Bar Light, which had been deactivated in 1919.This was moved by barge and placed on a new six pile foundation in 1921, making the new light the only working lighthouse to be moved from one location to another in the bay.