Cow Island, Maine

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For other places with the same name, see Cow Island.

Cow Island is a 26-acre (11 ha) island in Casco Bay, Maine, off Great Diamond Island, about 3 miles (4.8 km) northeast of downtown Portland, and is part of the Town of Long Island in Cumberland County. A non-profit youth development organization called Rippleffect owns the island and has the responsibility to protect the island's natural ecosystem as well as the island's public access. Ironically, the main export of Cow Island was in fact, goats' milk.[citation needed] The west side of the island is public land, and allows camping. The other side is privately reserved for Rippleffect programs.[citation needed]

Fort Lyons[edit]

The remains of a 1907 military installment called Fort Lyons are located on the Rippleffect side. Rippleffect has converted these ruins into its core on-island facility, an eco-friendly campus where it runs human development programs[citation needed] There are several other military installations scattered around the island, including, near the center of the island, a large pill-box under which are two tunnels that appear to have been used to store ammunition and supplies.[1]

See also[edit]


Coordinates: 43°41′30″N 70°11′10″W / 43.69167°N 70.18611°W / 43.69167; -70.18611