Galapagos lava – Pahoehoe and Aa lava Galapagos Islands and Ecuador Travel Blog

Two main types of subaerial basaltic lava have been distinguished;Pahoehoe (which is the Hawaiian word meaning ropey) which is characterized by smooth, billowy, ropey and toe surfaces; and Aa (the Hawaiian name for hurt) which has a fragmented surface. Pahoehoe is smooth, with a twisted, or ropey texture while Aa is sharp (it hurts to…

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