Zitat Legends about pots of gold buried at the ends of rainbows originate from long ago. Vikings invaded Ireland in 795 AD, and were known for looting and burying gold and other treasures in undisclosed locations. The legend of pots of gold began when they eventually departed the shores of Ireland, leaving some of their stolen gold behind.
Folklore depicts leprechauns as mistrustful creatures who detest humans. According to legend, leprechauns found the abandoned gold and buried it again so no human could ever find it. The old folktales tell us that there is a pot of gold hidden where the end of any rainbow touches the earth. Unfortunately, science tells us that rainbows do not have an end since their arch shape is an illusion! Rainbows are actually full circles reflected from raindrops, which we can normally only see when we are up very high, in an airplane or on a mountain. Rainbows also seem to move farther away from us as we move toward them (also due to their illusory nature) making for some frustrated treasure seekers!