The major inner feature of these multi-functional undivided cabins were the hearth, circular or quadrangular, and which conditioned the uses of the other spaces of the room.

The mound had a building constructed on its summit, inside of which was a large circular hearth.

A large fire burned within a well-made circular hearth.

Within the structures were large circular hearths and a prepared floor area.

A circular hearth and ventilator are also present in the center of this room, suggesting that inhabitants may have used this room for rituals or special gatherings.

This was the throne room, laid out around a circular hearth surrounded by four columns, the throne generally being found on the right-hand side upon entering the room.

In the middle of the cave there are circular hearths, where animal bones and artifacts dating back to early Iron Age were discovered.

The furnace consists of a circular hearth which contains the charge to be melted in the form of angular ring.

Pia used a stick to scrape a section of ground clear, then carried in stones to make a circular hearth.

All were found in the same stratum containing three circular hearths filled with charcoal and ash.