The Nam Tso Lake appears majestically through the mist and the rain, turquoise at the edges and as endless as the ocean, nestled amidst sky-scraping Himalayan peaks. The beauty of the landscape is breathtaking and even dreary weather can’t hide the natural grandeur of Tibet. But this story begins not in Nam Tso but in Lhasa, where we board the Qinghai-Tibet Railway, a high-elevation railway also called the Sky Road, for a 21-hour journey from Lhasa to Xining. It’s a dramatic trip that will take us through the heart of Tibet—that magnificent state dotted with snow-capped mountains, rolling grasslands and mystic lakes. This is a journey of discovery.