text: In their creation myth, the world was created by two rival deities, the First Creator and the Lone Man. The Missouri River divided the two worlds that the beings created. First Creator created the lands to the south of the river with hills, valleys, trees, buffalo, pronghorn antelope and snakes. To the north of the river, Lone Man created the Great Plains, domesticated animals, birds, fish and humans. The first humans lived underground near a large lake. Some of the more adventurous humans climbed a grapevine to the surface and discovered the two worlds. After returning underground, they shared their findings and decided to return with many others. As they were climbing the grapevine, it broke and half the Mandan were left underground.
  According to Mandan beliefs, each person possessed four different, immortal souls. The first soul was white and often seen as a shooting star or meteor. The second soul was colored a light brown and was seen in the form of the meadowlark. The third soul, called the lodge spirit, remained at the site of the lodge after death and would remain there forever. The final soul was black and after death would travel away from the village. These final souls existed as did living people; residing in their own villages, and farming and hunting.
  The Okipa ceremony was a major part of Mandan religious life. This complex ceremony related to the creation of the earth was first recorded by George Catlin. A man would volunteer to be the Okipa Maker, and sponsor the preparations and foods needed. Preparations took much of a year, as there were days of events, when crowds were hosted.