Aa is lava that forms a thick ,brittle crust . Pahoehoe is a lava that
forms a thin crust. Pillow lava forms when lava erupts underwater.
Blocky lava is kool, stiff lava that does not travel far from thr
eruption site.
Were is the rest of the question...I mean were is the so called column
Indian ocean
Atlantic ocean
pacific ocean
