Entrance to lava tube Location: Near Puerto Villamil, Isabela, Galápagos Islands, Ecuador Year: 2011 Merckdigitals catalogue number: 06-76313 Comments:

Lava tube Location: Near Puerto Villamil, Isabela, Galápagos Islands, Ecuador Year: 2011 Merckdigitals catalogue number: 06-76316 Comments:

Passage to depths of lava tube Location: Near Puerto Villamil, Isabela, Galápagos Islands, Ecuador Year: 2011 Merckdigitals catalogue number: 06-76317 Comments:

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