Over the rainbow: Hukou Waterfalls in Xijie County have frozen after continuous cold weather saw temperatures plummeted to lower than -10C.
These magnificent pictures beautifully capture the fast flowing waters of the Hukou Waterfalls in China slowly being enveloped by ice.
A long winter in which the mercury rarely rose above freezing has tamed the usually roaring rapids of the largest waterfall on China's Yellow River.
Temperatures this week were a bone-chilling -10C across the Xijie County region, helping the steady march of the ice. But there was still enough force in the river to send a mist into the air and create a magical rainbow.
Ice breaker: Water still manages to force its way over the freezing Hukou Waterfalls despite the creeping ice slowly strangling the river
The width of the waterfall changes with the fluctuating temperatures and rainfall. But it is usually nearly 100ft wide, increasing to more than 160ft during flood season. During the deep winter can be reduced to a fraction of that scale.
Hukou, literally means 'flask mouth' because the water hit a narrow section just before plunging over the 35ft edge, creating the appearance of being poured from a huge tea pot.
Magical: Ice hangs like stalactites in a cave on the edge of the usually mighty Hukou Waterfall after a prolonged period of freezing temperatures