Jack frost in the water butt

Last night temperatures shot down to -7 degrees; very cold for the end of March and much colder than expected. But sometimes these conditions produce some surprising sights. See this unusual ice crystal formation floating on the surface of the water inside one of our water buts.  You can even see a jagged edge where the crystals were beginning to  form at right angles to the main formation.

Needless to say, as soon as I showed my daughter she had to stick her hand in and break it, so I was glad I got a picture first.