When it reaches the caverns, the carbon dioxide escapes from the water and leaves some of the dissolved limestone in the form of calcite first on the ceiling.
(it; reaches; the caverns) (the carbon dioxide; escapes; from the water; T:When it reaches the caverns) (the carbon dioxide; leaves; some of the dissolved limestone in the form of calcite first on the ceiling; T:When it reaches the caverns)
it the carbon dioxide the carbon dioxide
reaches escapes leaves
the caverns
from the water T:When it reaches the caverns
some of the dissolved limestone in the form of calcite first on the ceiling T:When it reaches the caverns