In Kamay, Ilyas Yourish’s soulful documentary feature debut, the camera follows the Khawari family as they tend to their land in the remote mountains of central Afghanistan’s Daikundi province. The weather is frigid. Thick white snow coats both their homestead and the vast terrain. As they try to collect water they discover their well has dried up. But that does not matter. The mother leads her husband and their son in unravelling a long plastic pipe to syphon water from a dammed stream instead. When leaks emerge, the mother simply builds a fire, melts the ends of the yellow plastic tubing and…