Split Rock is a large dome-shaped granite boulder measuring approximately 25 feet (7.6 m) from north to south and 15 feet (4.6 m) from east to west. It is located in the borough of The Bronx in New York City, at the southeast corner of the intersection of the New England Thruway (I-95) and the Hutchinson River Parkway, near the border of the Bronx and Westchester County, and near the village of Pelham Manor. The rock is located just outside Pelham Bay Park in an island formed by the two mentioned highways and the off ramp from northbound Hutchinson Parkway to eastbound I-95.