The Galapagos Islands, 2006 & 2008
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Lava cactus (Brachycereus nesioticus). Punta Espinosa, Fernandina. It is generally the pioneer invading species on many lava fields. This is pahoehoe lava (pronounced pa-hoy-hoy), solidified from streams of molten lava.
Bird Photographs by John Van de Graaff