I've also been to Volcano National Park in Hawaii. Talk about amazing. We were able to hike about a mile or so over lava beds and see an actual lava flow.

Then we went back at night and you could see the orange streams of hot rock on the hillside that weren't visible in the daytime.

There was a part of the road that had been covered with lava just a month before we were there. We could walk on the cooled lava up to the "no parking" signs. The lava had come down and swirled around the signs so that only the top half of them remained and they were tilted at about a 30 degree angle. You could put your hand on the top of the pole and feel the heat coming out of it.