Start with high-confidence adventure travel books, then narrow by subgenre or adjacent topics.
Into the Ice
Mark Synnott, Mark Deakins
The Bucket List
Kath Stathers
Skyfaring
Mark Vanhoenacker
National Geographic Bucket List Family Travel
Jessica Gee
The Secret History of Bigfoot
John O'Connor, John O'Connor
The Art of Living Dangerously
Richard Bangs
Atlas Obscura: Wild Life
Cara Giaimo, Joshua Foer
The Third Pole
Mark Synnott
Lonely Planet Amazing Train Journeys 2 2nd Ed.
Lonely Planet
Lonely Planet Dream Trips of the World
Comrades on the Colca
Eugene Buchanan
A Gentle Rain of Compassion
David R. Shlim
Everest, Inc.
Will Cockrell