HOSA was created by Derrick Mason of Moss Hill Farm to join ALL our conservation and recreational groups to work together to promote and preserve our beautiful and priceless outdoor space in the Hilltowns of Western Mass. We all network together as volunteers to keep our natural resources intact.

Western Mass Hilltown Hikers, DCR, The Trustees, Hilltown Land Trust, Pioneer Valley Planning Commission, Jacob’s Ladder Scenic Byway, Westfield Wild and Scenic, Westfield River Watershed, Tamarack Hollow, Friends of the Keystone Arches, Highlands Footpath and more!