Ice like hairSourced
Silky ice strands can grow from rotting wood
Fine hairlike ice can form on damp decaying wood in humid conditions just below freezing. The strands are ice, rather than the fungus itself. Research in 2015 identified a fungus involved in their formation.
Wood, water and fungal activity can produce a remarkably hairlike shape.
Summary / translation: Unbubly · CC BY-SA 4.0
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Hair ice · Wikimedia contributors
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Reviewed: 2026-10-10