View at the bottom of a Kiva at Cliff Palace, Mesa Verde National Park, Colorado, 1970, currently digitized. Kiva is a (usually sub terrainial) circular room, used by the Ancestral Puebloans - nowadays by Hopi communities - in the Southwest of the USA for ceremonial and community council meetings
<a href="//commons.wikimedia.org/wiki/User:Foeniz" title="User:Foeniz">Hartmut Schmidt Heidelberg</a>
<span class="int-own-work" lang="en">Own work</span>