An icefall forms as winter sets in and really takes its time. Whereas in summer there is a trickle of water flowing over the rock, from November onwards, the cold traps the water as it trickles down and patches of ice form at the top of the waterfall, known as the terrace. Then the ice forms on the ledge and the water flows a little more, with much less flow, along the rock, and several other patches of ice gradually form. The last drops of water that fall along the ice cascade turn into stalactites as they freeze in place and eventually hit the ground.
