nana's geographical imagination

Haha! I remember this pahoehoe aa lava shit from high school, I was so amused when I heard of it the first time and had so much fun pronouncing the Hawaiian names. Check out the ‘skin’ enveloping the hot stuff inside. This photo is way cool. 

nationalgeographicmagazine:

Pahoehoe Lava, Hawaii
Photograph by Steve and Donna O’Meara, Volcano Watch International/National Geographic
Pahoehoe lava flows on Kilauea volcano in Hawaii Volcanoes National Park. Unlike aa (pronounced “ah ah”) lava, pahoehoe flows relatively slowly, allowing an insulating skin to form that keeps the temperature close to 2,190°F (about 1,200°C). Aa lava, on the other hand, moves faster and doesn’t have time to develop a skin, resulting in a cooler flow with a more angular texture.

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