Volcanoes. Ms. scerra. Word Origin. Romans believed in Vulcan, their god of fire. They thought that Vulcan worked at a hot forge, striking sparks as he made swords and armor for the other gods. Hawaiians told legends of the wanderings of Pele, their goddess of fire.
AA – thick, slow moving that hardens into rough tangle of sharp rocks.
Pahoehoe – thin, hot quick-moving lava that forms smooth, billowy surface.