Description: Bartholomew's Cobble is a 329-acre property in Sheffield, Massachusetts. The reservation is named for George Bartholomew, a farmer who purchased the fields and uplands in the late 19th century, but its distinctive landscape was created by the geological upheavals from the formation of the Taconic and Berkshire mountain ranges. The Cobble is home to 800 species of plants, including one of the greatest diversities of fern species in North America. The original acreage was purchased by The Trustees in 1946, with additional land added since then through purchase and donation. The Cobble was designated a National Natural Landmark in 1971.
Date: 1946 (Original acreage purchased in 1946. Additional land purchased in 1963, 1968, and 1969, and in 1976 with a matching grant from the National Park Service and the Massachusetts Historical Commission. Additional land given by Ellen Spero Roman and James S. and Robert E. Spero in 1978; Antonio J., Gilbert F., and Vincent A. Malnati in 1981; Harry Kahn in 1982; Dr. Alan J. Frish in 1982; and Ann Z. Grumpelt in 1996 and 2000.)