Heinz Isler ice structures.

The swiss engineer started experimenting with ice just a few years afer graduating from

university.

He would hang nets, cloth, strings and balloons on trees, and support them

from below with rods. They took on their natural form through their own weight and the

wind. Sprayed with water, they iced over and formed self supporting structures. Often, a

millimeter thick layer of ice was enough to allow the supporting structure to be removed.

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