 Hanging Rock and Wabash Reef National Natural Landmark

Hanging Rock National Natural Landmark is a site in Wabash County, Indiana that was designated a National Natural Landmark in May, 1986.The site, located on the southern bank of the Wabash River near the town of Lagro, contains an impressive natural exposure of fossilized coral reef dating from the Silurian Period some 400 million years ago.