Joan wanted to visit a volcano, so today we took a trip to the big island and toured Volcano National Park. We learned a lot about volcanoes and how they are formed. We took the crater trail hike and stopped at a few overlooks. We saw steam from several "hot spots" and before the hike was over, we got to see a few that were still glowing. We walked out onto some dry lava. It was sharp and hard to walk on. There weren't really opportunities to sketch though. I bought a patch at the gift shop to add to my patch collection.