What is "gheo-shih"

Gheo-shih (5000 BC-3000 BC), which translates to “River of the Gourd Trees” in the Zapotec language, is an open-air site found in the Oaxaca Valley that holds what is considered as the earliest representation of civic-ceremonial architecture. Within this site is a cleared area lined by boulders that is thought to have been used for rituals, dances or athletic competitions. This site could have held 25-30 people and is believed to be a congregation site for microbands during the rainy seasons of the Archaic period.