The gooey appearance of a rock wall in Manu Nui cave was formed when the lava chemistry started to change and the iron contained in the lava oxidized into various minerals. Manu Nui is ...

“The rocks underneath got hot ... Flow contained anywhere from 1,650 to 6,000 cubic kilometers of lava, rich in iron and magnesium. “It is very hard to make a volume estimate because (the ...

The iron isn't pure—scientists believe it ... Many people think of this as lava, but it's actually rock. The rock is so hot, however, that it flows under pressure, like road tar.

Alotenango, Guatemala — Guatemalan authorities evacuated around a thousand people on Monday after Central America's most active volcano erupted, spewing lava, ash and rocks. Residents with ...