Greg Witt lives the adventures he writes about. He does this so he can accurately tell you when to go, where to stay, what to expect, how to dress, what to be afraid of and how to make the most of your time.

For over 20 years he's guided private clients to the top of some of the highest peaks in the Alps, Andes and in the US. He's climbed the Matterhorn and Mount Rainier, led trekkers along the Inca Trail, crossed the Grand Canyon on foot seven times, rafted the Snake and Colorado rivers, explored Costa Rica's cloud forest, and climbed Colorado's three highest peaks in three days. Greg has guided kayakers on the Sea of Cortez, mountain bikers in Moab, and led archaeological expeditions across the Arabian Peninsula into Saudi Arabia and Yemen. His passion for adventure has always focused on sharing experiences with others.

Greg feels perfectly at home perched on a mountain top, rappelling a slot canyon, running a river, climbing a rock face, or trekking through a jungle and is the ideal personal adventure guide. Now he leads Rough Guide readers on the most breathtaking and exciting outdoor adventures on the globe. He comes ready to discuss the geology, history, archaeology, weather patterns, culture, flora and fauna of the exciting locales he loves.