Popol Vuh, Holy People and Changing Woman are among those myths. The Popol Vuh contains stories about creation, the exploits of the gods and the first humans. Sometimes these creation stories describe the ancestors of humans known as Holy People, who lived stressful and conflict ridden life underground. The Changing Woman gave birth to heroic twins, who prepared way for humanity by vanquishing monsters that roamed the earth. The Changing Woman created the first Navajo people from her own body.