As 42 people departed on foot from Sepiessa Point Reservation in West Tisbury at 9 a.m. sharp on Saturday morning, the air was a cool 50 degrees and the sky was clear blue. We were heading ultimately to Wilfred’s Pond Preserve in Vineyard Haven. The 15-mile walk would cross Martha’s Vineyard Land Bank properties, ancient ways and public roads that are hidden in the back woods of the Island.