Grab your tinfoil hats and running shoes, because an ambush of Area 51 is going down next month. Supposedly.

The mysterious military base has been the subject of countless conspiracy theories, most of which are of the extraterrestrial variety. For decades, many have believed that the Nevada district served as a holding site for aliens and UFOs—a theory that has been widely referenced in pop culture. Though the military officially acknowledged the base in 2013, its purpose remains a mystery. Which is why nearly half a million Facebook users have committed to invading Area 51 in a couple of months.