A huge amount of foam built up on Friday (February 28th) on the Big Sioux River at Falls Park in South Dakota in the USA.<br /><br />Photographer Justin Frantzen compared the scene to a "bubble bath."<br /><br />A milder winter has kept these falls moving compared to recent years when they have iced over.<br /><br />++CLIENTS PLEASE NOTE: THIS VIDEO HAS BEEN LOOPED++
