You searched for: Place Errol. Fen on NH-ME border 1.3 miles southeast of Tidswell-Point & 1.6 miles northeast of Sargents Cove boat ramp. Approached from southwest by crossing Lake Umbagog from boat ramp & continuing northeast for about 1/2 mile to swamp & fen. Remove constraint Place: Errol. Fen on NH-ME border 1.3 miles southeast of Tidswell-Point & 1.6 miles northeast of Sargents Cove boat ramp. Approached from southwest by crossing Lake Umbagog from boat ramp & continuing northeast for about 1/2 mile to swamp & fen. Topic Cyperaceae Remove constraint Topic: Cyperaceae