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The last word

28 April 2001

Thin ice

Question: I discovered the ice helicites “growing” out of rocks
near Frome in Somerset. The temperature had hovered around freezing for several
days and the Sun had been unable to melt the ice formations because they were in
a steep, shaded valley. They were growing from the ground and rocks around an
old iron works. How did they form and why are they curled into different shapes?
Some were as thin as human hair and around 3 centimetres long.

Answer: I was delighted to see this question and photo. My wife and I saw
this phenomenon on a…

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