Final answer:
Jomon period dwellings were pit houses with sunken earthen floors, central support pillars, and thatched grass roofs, evolving from round to square or rectangular shapes, often with woven rugs on the floor and indoor fire pits.
Step-by-step explanation:
The dwellings of the Banpo, a Neolithic culture located in current day Xi'an, China, were part of an era known as the Jomon period. The typical Jomon house was a pit-house style dwelling. These homes were initiated by digging into the ground to create a sunken floor area, often likened to a basement level but as the entirety of the structure.
The Jomon people utilized central upright pillars surrounded by supporting pillars to hold a thatched roof. At first, these homes were rounded in shape, akin to modern-day teepees, with a singular central support pole. Over time, their architectural style evolved into more square or rectangular shapes with a more complex roof support system comprised of multiple posts and a central beam.
The roofs were made of thatched grass which helped in shedding water, while the hardened earthen floor was commonly covered with woven rugs for comfort. Additionally, indoor fire pits served dual purposes for cooking and providing warmth.