The Historic Pillow Rock

The Historic Pillow Rock is an excellent example of an ellipsoidal lava flow said to be 2.7 billion years old with peculiar masses formed when dark lavas flowed under water. One of the few specimens of its kind in the world; the rock is an outcrop of Ely Greenstone, volcanic origin. Turn north on 13th Avenue and go 4 blocks. Signs will take you to Main Street where the rock is located.

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