>>23182693
We don't know if it was the demiurge or the sun god who caused the flood. They change from culture to culture.
In one version, after evil broke out amongst the people in the Third World, with the help of Spider Grandmother, or bird spirits, a hollow bamboo reed grew at the opening of the Third World into the Fourth World. This opening, sipapu, is traditionally viewed to be the Grand Canyon. According to Barry Pritzker, "the people with good hearts (kindness) made it to the Fourth World."[11]:16–17
The other version (mainly told in Oraibi) has it that Tawa destroyed the Third World in a great flood. Before the destruction, Spider Grandmother sealed the more righteous people into hollow reeds which were used as boats. On arrival on a small piece of dry land, the people saw nothing around them but more water, even after planting a large bamboo shoot, climbing to the top, and looking about. Spider Woman then told the people to make boats out of more reeds, and using island "stepping-stones" along the way, the people sailed east until they arrived on the mountainous coasts of the Fourth World.