Isli, the "Lake of the Bridegroom", is about 10 kilometres south-east of Imilchil at 2,260 metres. Bigger and far deeper than Tislit, it is set in a stark amphitheatre of dark hills and feels much more remote. The drive in passes pastures dotted with black goat-hair tents in summer, when nomadic families bring their flocks up to graze.
A rough track leads to the shore; in a normal car you may want to walk the last kilometre. There is no village, no shop, no signage — just water, sky, and the wind. Combine the two lakes with the Imilchil market day or the moussem for a memorable two- or three-day loop.