The relationship between mountains, indigenous cultures, and tea has informed much of Fuchs' work, with a particular focus on Asia. After considerable time spent between the Himalayas and Southwestern China, he became compelled by the people and their narratives surrounding the old tea caravans. This interest culminated in a journey to retrace the path of the world's highest ancient trade route, from the perspective of the first Westerner to do so. Fuchs brought due attention to this story in his book The Ancient Tea Horse Road: Travels with the Last of the Himalayan Muleteers (2008), where he documents the 6000 km, 7.5 month journey.