It is that U-shaped area that collects snow-melt and runoff from the Heldeberg Mountains and is always full of water.
(It; is; that U-shaped area that collects snow-melt and runoff from the Heldeberg Mountains and is always full of water) (that U-shaped area; collects; snow-melt and runoff) (that U-shaped area; is; T:always; full of water)
It that U-shaped area that U-shaped area
is collects is
that U-shaped area that collects snow-melt and runoff from the Heldeberg Mountains and is always full of water
snow-melt and runoff
T:always full of water