Cuzco

Cuzco, takes Simon and Elijah on a dangerous and harrowing quest to the Andes and the forbidden land of the Incas, fifteen years after the end of the American Civil War. The expedition team is dispatched by President Grant with a mission to search for a priceless treasure and an indescribable entity vital to the national security of the United States. Pursued by a team of ruthless French mercenaries trained to kill, the Americans must find the object of their search before their adversaries do-the fate of the world may depend on it. Their journey exposes the group to incredible challenges, perilous confrontations, and startling discoveries as they journey deep into the sacred lands of the Incas and to the mysterious ancient citadels hidden deep in the land of the mists. The amazing mysteries they discover will change history books. All of this leads to an explosive and unimaginable conclusion.
Cuzco is the second book in The Toltec Series.