 The bridge is mentioned in the Prose Edda books Gylfaginning and Skáldskaparmál , where it is referred to as Bifröst . In chapter 13 of Gylfaginning , Gangleri ( King Gylfi in disguise ) asks the enthroned figure of High what way exists between heaven and earth . Laughing , High replies that the question isn 't an intelligent one , and goes on to explain that the gods built a bridge from heaven and earth . He incredulously asks Gangleri if he has not heard the story before . High says that Gangleri must have seen it , and notes that Gangleri may call it a rainbow . High says that the bridge consists of three colors , has great strength , " and is built with art and skill to a greater extent than other constructions . " 
