Mantle I think that is it!
The magma that rises out of them cools eventually, with some help from the water. eventually all the cooled magma builds up into an island.
It is covered with a biological community of vegetation composed of
mainly cone-bearing needle or scale-leaved evergreen trees. It is called
"land of little sticks". The forest trees in the taiga grow as tall
as the highest latitudes of other trees in other places.
