Celestial Caustic Arrow MTX and Expedition burial mounds clipping

The Expedition burial mounds are too high and cause a jarring clipping effect with the lingering groundeffect of the Celestial Caustic Arrow MTX.

This reveals the low poly nature of the burial mounds, making the game look terrible.

This has so far always been avoided in PoE mapdesign, but Expedition spams a massive amount of groundeffect-clipping 3D objects making this oversight very noticable and immersionbreaking.