The official position of scientists is that over time the trees ended up under sedimentary rocks (this often happens in the mountains), and water filled with iron elements flowed there. It covered the trees, forming something like a shell. The trunks and branches of the trees gradually began to turn into coal, but the iron shell remained.

Can you imagine that the trees themselves arranged themselves in even rows, clearly one above the other, three large trees and one smaller one in a row? Although in nature there is a process of calcification, when biological tissue accumulates metals or turns into a mineral, but nature is not a loader; it will not stack logs along a ruler.