There is an unbelievably number of volcanos around the Island of Hawaii, but luckily there is only one of them which is still active now – Kīlauea.
A boat took us to a place in Pacific ocean which is close to where lave flowing from the volcano into water. Within fifty feet from the lave flow we could feel extreme heat and see the steam evaporated from ocean soon after a drip of lava falling down. The water around there is close to 120F.
One the road to Mauna Kea, there are some lava lands (or lava beds). Those lands were formed by the solidified lava from last eruption at the beginning of last century. On the black layer of lava only scattered plants are surviving and growing.
There are also many small mountains with pyramid – shape and reddish color. They are dormant volcanos, and the red color was caused by soil with rich iron.
For me traveling to any new places should be a combination of site-seeing and knowledge – gaining, this time at the Island of Hawaii it was geology.