New Jersey's Beemerville Volcano reveals ancient geological history

New Jersey has a volcano known as the Beemerville Volcano, located in Sussex County. It erupted about 420 million years ago, but now only a volcanic neck remains, rising 1,020 feet. This is the only volcanic structure left in the state. The Beemerville Volcano is classified as extinct, with no chance of erupting again for hundreds of millions of years. The geological forces that created it no longer exist in the eastern U.S., and there are no active volcanoes nearby. Despite its volcanic history, people live in the area, which offers scenic views. The site is not publicly accessible, and while some volcanic rock is present, the exact remnants of the eruption are uncertain.