This is the breathtaking moment a cloud waterfall floats over a mountaintop in northern Thailand.<br /><br />The stunning phenomenon resembled a slow-moving mass of smoke as it crept over the hillside in Petchabun province on July 15.<br /><br />Passing taxi driver Suphansa Rodchom pulled over to record the clouds slowly moving across the green mountains.<br /><br />Suphansa said: "It was such a memorable moment, I could not believe that I would have a chance to see this."<br /><br />The clouds are called "cap clouds" which normally forms over the peak of a mountain, where moist air is forced up the windward slopes and condensates as it flows over the top.
