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The NYC Region -post-glacial ravine carved into Orange Mountain Basalt

By Geology and Ecology of National Parks
This is a photo of a V-shaped, post-glacial ravine carved into the Orange Mountain Basalt.
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Detailed Description

A V-shaped, post-glacial ravine carved into the Orange Mountain Basalt in the Watchung Reservation near the historic village of Feltville, New Jersey.

Sources/Usage

Public Domain.