Ladakh is a land like no other. Bounded by two of the world's mightiest mountain ranges, the Great Himalaya and the Karakoram, it lies athwart two other, the Ladakh range and the Zanskar range. In geological terms, this is a young land, formed only a few million years ago by the buckling and folding of the earth's crust as the Indian sub-continent pushed with irresistible force against the immovable mass of Asia. Its basic contours, uplifted by these unimaginable tectonic movements, have been modified over the millennia by the opposite process of erosion, sculpted into the form we see today by wind and water. Yes, water! Today, a high -altitude desert, sheltered from the rain-bearing clouds of the Indian monsoon by the barrier of the Great Himalaya, Ladakh was once covered by an extensive lake system, the vestiges of which still exist on its south -east plateaux of Rupshu and Chushul - in drainage basins with evocative names like Tso-moriri, Tsokar, and grandest of all, Pangong...