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So now we know what's at the end of the rainbow - and it's not a pot of gold.

Instead it meets the northbound carriageway of the Highway 241 toll road in Orange County, California.

And according to witnesses it was travelling at just over 30mph.

This amazing picture was snapped last Sunday, following a storm on the west coast of the US, by amateur photographer Jason Erdkamp's iPhone.

According to myth there is a pot of gold at the end of a rainbow, perhaps hidden by leprechauns.

But Jason, from the Los Angeles suburb of Lake Forest, said: "There was no pot of gold, but I did win $25 that night on a lottery ticket."