Hawaiian Lava Speleothem


   Lava plain on the foot of Kilauea volcano.
You can see a lot of lava tree molds in everywhere at the 1000m (3300ft) above sea level.
Lava stalactites on the ceiling of lava cave in Mauana Loa.
The shiny tiny stuff are origin of glass silicate. Sometimes silicate becomes calsium-silicate.
   Kaimana cave in Hilo city.
You can see the ceiling very thin because of inner gas pressure pulled it up strongly. Therefore, it was extended and was made thin plate on lava cave.