Redemption Rock is a colonial-era historic site in Princeton, Massachusetts. In 1676, during King Philip's War, the release of Mary Rowlandson (the wife of a Puritan minister) from her Native American captors was negotiated atop a granite ledge. The .25-acre (0.10 ha) parcel upon which the rock stands was acquired by the land conservation non-profit organization The Trustees of Reservations in 1953, and is open to the public. Redemption Rock is located off Massachusetts Route 140, near Wachusett Mountain.