Grom, Rumbur Valley, Chitral, NWFP, Pakistan The upper village Grom in the lower part of the Rumbur valley inhabited by Kalashas. They have preserved their ancient religion and traditions. Their language, Kalasha, is Dard and belongs to the Indo-aryan group of languages. The village at the mountain top used to have a spring. Ever since it changed its outlet to a place at the foot of the hill the habitation concentrated in areas closer to the new watersource.