Reconstructed roof of circular dwelling at Be’er Resisim. Typical of many circular rooms found at this and other MBI sites, the room’s central pillar originally held wooden beams radiating out to the stone wall. Large flat chalk slabs were then placed over the wooden beams. The final roof construction phase, not shown in this photo, was to cover the chalk slabs with mud or lime. This roof pillar is formed of one tall stone topped by four drums to give it added height.