A deadly river that boils without volcanoes, hidden deep in Peru’s jungle. Worshipped by shamans, feared by scientists—Shanay-Timpishka is real, and it may be a glimpse into Earth’s future.

The book is filled with detailed trail maps ... Machu Picchu, the way Bingham did 100 years ago this July, by hiking, climbing, slogging, tenting, and exploring his way through the jungles of Peru.