Date of discovery: January 19, 2012
Location of discover: Dagestan, Russia
Look at this incredible sinkhole discovered in Dagestan this week. The evidence that leads me to believe that this tunnel was made by a UFO exiting an ancient exit that was buried long ago. What I mean to say is that underground bases to have back doors or alternate exits, but most were probably buried in the last few hundred years to prevent humans from discovering them. The tunnel widens as it comes to the top, meaning it was an exit point for something that came from underground. Notice the baffled onlookers that drove there just to see it.
I know my imagination sometimes runs wild