The Nolan family recently went on a vacation to Hawaii, and it wasn't all sun and beach at Waikiki on Oahu!
One day we went to the "big island" of Hawaii to see Kiluea Volcano.
It's fascinating to see a volcano that is still erupting. Hawaiian volcanoes are not explosive (like Mt. St. Helens) and erupt more slowly, oozing lava out that eventually flows to the sea forming more island land.
The crater behind my family (in the first picture) looks like The Grand Canyon when you look over the edge. Back in the early 1900s it was a sea of lava.
The smoke rising is from a recent "bubble up" that started in 2008.
From another part of the mountain, lava flows to the sea (started in 1983). The second two pictures are where it crossed the road down by the ocean.
I visited in 1998, and there has since been another flow over that road. On my first visit, the road stopped where the "road closed" sign is. Now it covers more road further back to the west.
We also were able to walk through a "lava tube" where the outside of the magma flow hardened, while the lava still flowed in the middle, eventually flowing out, leaving an empty "cave".
If you ever get to Hawaii, you should spend a day on the Big Island and get a tour of the volcano. A helicopter ride is the best (I did that in 1998), but there's still plenty to see by car and on foot.