Waterfalls are one of nature’s most dynamically beautiful phenomena. But during the winter some waterfalls completely transform. Where they once rushed roaring water, they now stand frozen, white and silent. This oxymoron of a motionless falls is an ice climber’s dream. It’s probably hard to imagine that the rushing water of a falls could freeze, but it can. In freezing temperatures, water molecules begin to slow down and eventually stick together, which is how water changes from a liquid to a solid. The snowball effect of those gumming water molecules results in a waterfall that’s frozen in midair. Midday sun, changing temperatures, precipitation and runoff will send new trickles of water down to refreeze in different formations. There are two types of frozen waterfalls: one type forms from a legitimate waterfall and one type forms from temporary runoff after a particularly heavy rain. Most only freeze for a short time making them rare events, so these photographs are even more spectacular.