Fifteen years ago, from a hole in the ground in rural Washington, a tiny flying machine emerged and Charles Hoy found it. From all appearances, this small vehicle wasn't built with any existing human technology and Hoy made a fortune selling that technology to the first eager customer. Now with his fortunes dwindling and his curiosity piqued with more than a decade of questioning, Hoy has hired a team of adventurers to enter this vast, underground realm in hopes of bringing back even greater dis