If you are of a certain generation, and remember being a child in awe when you first saw giant dinosaurs roam the big screen in swaths of greenery, well, you can relive part of that memory by going to Kualoa Ranch on Oahu. This is where those scenes were filmed and the real thing is definitely awe inspiring. If you are ever going to go horseback riding, this is THE place to go just for the views. I had an amazing time and highly recommend it. You can read the detailed account here.
You can see (and smell) lots of sulfur dioxide gas and steam coming out of vents at Volcanoes National Park.
You can see lots of sulfur dioxide gas coming out of the summit crater / caldera of the Kilauea volcano. The camera’s zoom allowed me to get a really close view in 4K video.