Nittany Arch

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The Nittany Arch is an anticline geologic formation in the western part of the Ridge and Valley province of the Appalachian Mountains of Central Pennsylvania, United States. During the Appalachian orogeny, the sedimentary rock layers in this area folded up, forming the Nittany Arch. The arch was an ancient Himalayan scale mountain that towered above what is now Nittany Valley. It has since eroded leaving its many rock layers exposed with the youngest rock layers at the foot of the Allegheny Front. The more durable rock layers have left the surrounding sandstone ridges above the limestone valleys.

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