Because that is the most efficient shape for materials used.
They Were Wikiups
The coahuiltecan tribes used wikiups as shelter.
They're called Wikiups
They Were Wikiups
They lived in wikiups and buffalo-hides, which was their alternative.
Usually teepees, but sometimes wikiups, or small huts.
South Texas is where the Coahuiltecans lived
The Wampanoag homes were wikiups, a sort of rounded dome made of twigs.
Wikiups are traditional Native American dwellings typically constructed using a framework of wooden poles or branches. These poles are arranged in a conical shape and often covered with materials such as grass, reeds, or bark for insulation and weatherproofing. The design allows for effective heating and cooling, making them suitable for various climates. Wikiups are usually small and portable, reflecting the nomadic lifestyle of many Indigenous peoples.
Apaches were a migratory people. Depending on the location and available materials, Apaches lived in teepees, mud hogans or wikiups.
The Shoshone constructed wikiups using locally available materials, primarily willow branches and grasses. They created a circular framework of bent willow poles, which were then covered with layers of grass, reeds, or bark for insulation and protection from the elements. The structure was typically low and dome-shaped, allowing for easy heating with a small fire inside. Wikiups were portable, allowing the Shoshone to move easily with the seasons and their food sources.
Longhouses and wigwams for North east tribes, Tipis for the Plains tribes, Wikiups for the southwest tribes, log cabins for the Cherokee, etc etc... what tribes do you mean specifically?