Snake Hill is an igneous rock

Igneous rock

Igneous rock is one of the three main rock types, the others being sedimentary and metamorphic rock. Igneous rock is formed through the cooling and solidification of magma or lava...

 intrusion

Intrusion

An intrusion is liquid rock that forms under Earth's surface. Magma from under the surface is slowly pushed up from deep within the earth into any cracks or spaces it can find, sometimes pushing existing country rock out of the way, a process that can take millions of years. As the rock slowly...

 jutting some 150 feet (46 m) up from the floor of the Meadowlands

New Jersey Meadowlands

New Jersey Meadowlands, also known as the Hackensack Meadowlands after the primary river flowing through it, is a general name for the large ecosystem of wetlands in northeast New Jersey in the United States. The Meadowlands are known for being the site of large landfills and decades of...

 in Secaucus

Secaucus, New Jersey

Secaucus is a town in Hudson County, New Jersey. As of the 2010 United States Census, the town population was 16,264. Located within the New Jersey Meadowlands, it is the most suburban of the county's municipalities, though large parts of the town are dedicated to light manufacturing, retail, and...

, New Jersey

New Jersey

New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...

, USA

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It was largely obliterated by quarrying in the 1960s that reduced its height by one-quarter and its base area by four fifths. The diabase rock was used as building material in growing areas like Jersey City. The graffiti-covered remains of Snake Hill are a familiar landmark to travelers on the New Jersey Turnpike

New Jersey Turnpike

The New Jersey Turnpike is a toll road in New Jersey, maintained by the New Jersey Turnpike Authority. According to the International Bridge, Tunnel and Turnpike Association, the Turnpike is the nation's sixth-busiest toll road and is among one of the most heavily traveled highways in the United...

's Eastern Spur, which skirts its southern edge.