Two popular trails thread their way up the Parvati Valley: one heads north from the fascinating hill village of Malana, over the Chandrakhani Pass to Naggar; the other follows the River Parvati east to another sacred hot spring and sadhu hang-out, Khirganga. The trail continues from Khirganga to Mantalai with its Shiva shrine and over the awesome 5400m Pin-Parvati pass into Spiti. This serious snowfield is riddled with crevasses and takes several hours to cross.
A guide is absolutely essential. Over the last two decades the Parvati Valley has seen the mysterious disappearance of at least twenty travellers. Most of the vanished have never been found, including the Israeli who went missing in the most recently publicized case in July 2009. Several theories have been put forward to explain these disappearances, from drug-related accidents on the treacherous mountain trails, to attacks by bears or wolves or foul play by the numerous cannabis cultivators in the region; some even claim that the disappeared may have joined secret cults deep in the mountains. Most likely, however, they were victims of bandit attacks, motivated solely by money, with the wild waters of the River Parvati conveniently placed for disposing of bodies. Individual travellers should take heed and only use recognized guides on treks across the mountains.