Although the higher elevations (above 2,500 meters) in the region were sparsely populated because of physio graphic and climatic difficulties, the lower hills and valleys were densely settled. The hill landscape was both a natural and cultural mosaic, shaped by geological forces and human activity. The hills, sculpted by human hands into a massive complex of terraces, were extensively cultivated.
Like the Mountain Region, the Hill Region was a food-deficit area in the early 1990s, although agriculture was the predominant economic activity supplemented by livestock raising, foraging, and seasonal migrating of laborers. The vast majority of the households living in the hills were land-hungry and owned largely pakho (hilly) land. The poor economic situation caused by lack of sufficient land was aggravated by the relatively short growing season, a phenomenon directly attributable to the climatic impact of the region's higher altitude. As a result, a hill farmer's ability to grow multiple crops was limited. The families were forced to adapt to the marginality, as well as the seasonality, of their environment, cultivating their land whenever they could and growing whatever would survive. Bishop has noted that "as crop productivity decreases with elevation, the importance of livestock in livelihood pursuits . . . increases. For many Bhotia [or Bhote] living in the highlands . . . animal husbandry supplants agriculture in importance." During the slack season, when the weather did not permit cropping, hill dwellers generally became seasonal migrants, who engaged in wage labor wherever they could find it to supplement their meager farm output. Dependence on non agricultural activities was even more necessary in the mountain ecological belt.