As a part of the Vineyard Conservation Society’s Clean Water Initiative in partnership with the Massachusetts Environmental Trust, this season’s program will focus on the health of Vineyard waters. On Sunday Nov. 9, Islanders of all ages are invited to the come to Crow Hollow Farm (located off of New Lane in West Tisbury). This family-friendly walk will proceed around the farm and out to the pretty Pear Tree Point on the Tisbury Great Pond. Participants and kids will have the chance to meet and learn about the ponies, land and water. The walk will be guided by the owners and operators of Crow Hollow Farm — Samantha Look and Kristian Strom. Cider and cookies will be served. The walk starts at 1 p.m.