Another commonly used source of firewood, collected free of charge, is the forest shelter belts on irrigated farmland, saxaul protective belts, or strips of woody vegetation along roadsides, field bounds and watercourses in mountain ravines. Furthermore, as most of the agricultural land in Tajikistan is much more suitable for livestock farming than for the production of crops, in some regions, dried dung is more commonly used as fuel than firewood, which is much less accessible in mountain regions, e.g. in Pamir. Some villages are supplied with coal for heating purposes, while the number of mountain settlements where electricity is becoming available is still growing, which also limits the dependency on firewood.