Area 51, also known as Groom Lake, is located in the Nevada desert, approximately 83 miles northwest of Las Vegas, Nevada. It is a highly classified United States Air Force facility that has been the subject of numerous conspiracy theories over the years. The exact purpose of Area 51 is still unknown to the public, but it is believed to be used for the development and testing of experimental aircraft and weapons systems. Unauthorized entry into the area is strictly prohibited and heavily monitored by security personnel.