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The Adirondacks

By Geology and Ecology of National Parks
Left: Adirondack hills from the top of a watch tower in late fall. Right: a close-up of a gneiss rock surrounded by orange leaves.
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Detailed Description

The Adirondacks as seen from Goodnow Mountain Watch Tower (left) and a Grenville Province gneiss found along the Goodnow Mountain Trail (right). The alternating layers of white and dark within the rock is the result of very high pressures and temperatures.  Photos courtesy of Alexandra Bancos.

Sources/Usage

Courtesy of Alexandra Bancos