The Tosh Valley, a tributary to the renowned Parvati Valley leading to Pin Parvati Pass, begins narrowly at Pulga where the Tosh Nalla converges with the Parvati River. Ascending northward, the valley gradually widens, revealing a succession of vibrant green meadows. The Tosh Glacier, framed by the imposing Papasura peak (6451m), marks the valley’s head, with the Sara Umga Pass offering a gateway to the Lahoul Valley.