A few miles beyond Gilgit the rough evidences of a ruined stupa, and a still rougher outline of a Buddhist figure cut on the rocks which guard a narrow gorge leading up the Hindu Koh slopes, points to the take-off for Darel. No modern explorer has followed that route, except one of the native explorers of the Indian survey who travelled under the soubriquet of "the Mullah." The Mullah made his way through the Darel valley to the Indus, and describes it as a difficult route. There is little variation in the tale of troubled progress, but "the Mullah" makes no mention of Buddhist relics, nor is it likely that they would have appealed to him had he seen them. There can be little doubt, however, that Darel holds some hidden secrets for future enterprise to disclose. "Keeping along Tsungling, they journeyed southward for fifteen days," says Fa Hian. "The road is difficult and broken with steep crags and precipices in the way. The mountain-side is simply a stone wall standing up 10,000 feet. Looking down, the sight is confused and there is no sure foothold. Below is a river called Sintu-ho (Indus). In old days men bored through the walls to make a way, and spread out side ladders, of which there are seven hundred in all to pass. Having passed the ladders, we proceed by a hanging rope bridge to cross the river." All this agrees fairly well with the Mullah's account of ladders and precipices, and locates the route without much doubt. The Darel stream joins the Indus some 30 to 35 miles below Chilas, where the course of the latter river is practically unsurveyed. Crossing the Indus, Fa Hian came to Wuchung, which is identified with Udyana, or Upper Swat, and there he remained during the rains. The Indus below the Darel junction is confined within a narrow steep-sided gorge with hills running high on either side, those on the east approaching 15,000 and 16,000 feet. There are villages, groups of flat-roofed shanties, clinging like limpets to the rocks, but there is little space for cultivation, and no record of Buddhist remains north of Buner. No systematic search has been possible.