Poia Lake Cave: Poia Lake Anastomosis December 20, 2018February 1, 2018 This content is for NRMG members only.Register Here Already a member? Log in here Related posts: Searching for Caves in the Northern Rocky Mountains Lost Creek Siphon: The Carl Froslie Experience My Trip to the Silvertip Mountain Cave System: 2019 Poia Lake Cave 9/18/15 The Bear Sprayed Us: A Classic Bigfork Trip to Poia Lake The Classic Lake Tour in Little Ice Cave