Origin of sky cover
Examples from the Web for sky cover
They flew down through the hole in the Sky-cover to the Earth-plain below.
Spring, and summer, and autumn had slipped down the hole in the Sky-cover.
Then he threw it to the east, and it rose to the highest point in the sky-cover and began to slide down on the other side.Myths and Legends of California and the Old Southwest|Katharine Berry Judson