Two types of lava

Thanks to Ren, I learned that there are two types of lava:

Pahoehoe (pronounced "pa-hoi-hoi") lava, which is bulbous and low to the ground (and contains beautiful colors):


and A'a lava, which has sharp edges and will easily scratch (if not cut) you. The rocky coastline near Kahena Beach that I wrote about in my last post is full of A'a lava, and a pic of it in action is here.