Smoke hole

Pre-modern English homes with unglazed windows or thatch roofs required no special vent for smoke.

These structures typically had only one story for living spaces, and inhabitants made do with a band of relatively clear air near the ground.

In the Native American long house, smoke holes occur in intervallic square openings along the roof.

In Native American plains style tipi, the smoke hole consisted of one easily accessible smoke flap vent which was positioned around the apex of the interior beams and the flaps were extended outward on poles to open the vent.

Unlike the Native American tipi however, there are no smoke flaps, just a round hole at the top of the tent.