Black Hole

The largest lake in Napa Country is one of the most beautiful sights the world has to offer. However, it’s not natural. It’s a result of the Monticello Dam, which was built to provide hydroelectricity and water to the nearby areas. It is estimated to have prevented millions of dollars in flooding-related damages for decades.

This incredible phenomenon, known as the Glory Hole, is in Lake Berryessa, which filters out the excess water when it rises. The 200-feet dropdown pipe is 72 feet in diameter and has not been operated since 2006. Currently, Lake Berryessa is the seventh-largest man-made lake in California.