Pele's hair

Thin strands of volcanic glass drawn out from molten lava, named for Pele, the Hawaiian goddess of volcanoes. The strands are formed by the stretching of molten basaltic glass from lava, usually from lava fountains, lava cascades, and vigorous lava flows.

Pele's hair, Stromboli. Individual hairs up to 3 cm long. Photo: J. Alean.

Another example of Pele's hair, (Mauna Kea East Rift Zone, Hawaii 1989)