Wade Brackenbury wanted an adventure, and he got the journey of a lifetime. Along with a charismatic photographer named Pascal, Wade went seeking the Drung people, a dwindling minority in the vast empire of China, said to live in an obsure valley in Southern Tibet. No Westerner had been to the Drung valley in over a century. Yak Butter & Black Tea is a story of daring and adventure, offering a fascinating glimpse into a hidden corner of contemporary China. And it is the account of a young man, driven by a compulsion he doesn't understand, as he tests himself in this dangerous, exotic land. "A...