40 47' 34 N
75 36' 61 W

The Lehigh Water Gap was formed by the constant carving and eroding of Blue Mountain by the Lehigh River. The Lehigh Water Gap has a host of interesting legends and stories that explain its formation. Geologic evidence indicates that the waters of the Lehigh River flowed over the upper elevations of Blue Mountain. The dominant shale and sandstone of the region can be found on the exposed surface of Blue Mountain on both sides of the river. The Lehigh gap was visited by the world famous birdwatcher, John James Audubon, in 1829. In 1842, the father of modern geology, Sir Charles Lyell, also explored the area.

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