If it was "new volcanic" from a hotspot it would be a peak not a circle, volcanic caldera's don't appear at the start of a volcano, only after an eruption. An atoll is not a caldera, Its coral that starts at the base of a volcanic island and grows as the island goes down. There ar...
its just a lava cast forrest, there are some in oregon that are 50 feet deep or more. Large laval flows flood an area, the lava hits the tree and cools down, the rest of the lava goes around hence the tree is preserved untill it rots leaving the hole.
@TheBSideDJ The CO2 can be injected from sources that create it as a by product such as coal plants that won't be closed any time soon. The gas is less dense and as such travels through the system with out large pumps. The injection of CO2 increases growth by 10-40x compared to natural CO2 injes...
@WingZeroXXXG
If it was "new volcanic" from a hotspot it would be a peak not a circle, volcanic caldera's don't appear at the start of a volcano, only after an eruption. An atoll is not a caldera, Its coral that starts at the base of a volcanic island and grows as the island goes down. There ar...