Describe the pit-houses found at Burzahom.

Burzahom in Srinagar, Kashmir is a site where many pit-houses have been found. Stone tools were used to dig circular pits in the ground, which were then plastered on the sides using mud. The pits were generally broad at the base and narrow near the opening. The pits had steps that led to the bottom. These were roofed over to make them suitable to live in. Pit-houses were made to enable the early humans to withstand the cold. Some of the pit houses had clay or stone ovens, which were used for cooking food.