Rainbow Stream Lean-To Once pictured in National Geographic Magazine for a 1987 article. Located in a beautiful evergreen forest just south of Rainbow Lake, 30 miles from Katahdin. Built in 1970 and still has a baseball bat floor.

Why Lean-To? The same question was asked in the Poplar Ridge register (see photo of Poplar Ridge Lean-To) and the maintainer's answer was "Why? Aren't they all?" A simple three sided shelter can be built by leaning small logs against a horizontal log, attached to two trees some feet from the ground, to form a crude roof. This is the origins of lean-to. Some trail clubs choose to use the name.