is an integral part of the monument and is located on the northern flank of Fossil Gulch in the northern portion of the monument.

The Hagerman Horse Quarry resides near the top of the hillside of Smithsonian Hill. The hill was named from the early Smithsonian excavations of the Hagerman horse. The Hagerman horse is the first fossil representation of the genus Equus in North America.

Historically, the Hagerman Horse Quarry was divided into three informal

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