After discovering secrets in Atlantis that mark the point of mankind's end, John Savage and Alyssa Moore once again seek the truth behind the riddles of a final extinction event.Along the chain of Himalayan mountains sits a precipice that serves as a gateway into Mount Everest. Teaming up with Ben Peyton and his crew of elite soldiers who are joined by a Chinese special-ops unit, they quickly discover that the mountain had been hollowed out to contain an entire valley filled with temples and pyramids. As the teams push forward to find the secrets of an alleged GREAT ARMY that resides within this cavern, they soon uncover the dangers and pitfalls that lead to a grisly truth. Not only do they have to deal with the horrors within, they must also deal with the mistrust they hold for one another because here, inside the City Within the Clouds, the enemy of my enemy is never my friend.From the Bestselling author of The Vatican Knights series with more than 400,000 ebooks sold worldwide.