Gullfoss is Iceland's most famous waterfall. It was a double cascade of water and it is 32 metres high. The water begins at Lángjökull Glacier, which flows into the Hvítávatn Lake. Icy cold water then flows 40km along the Hvítá River before it gets to Gullfoss.
The top cascade
The lower cascade
Some of the water spray hits the side of the rockface and freezes. Some of the water spray drifts over the to winter grass and freezes over the blades of grass.
It was spectacular!