Terrain and mountains with holes

As an experienced content creator for the game Planet Coaster, I REALLY miss being able to better manipulate the terrain in Dungeon Alchemist, especially being able to create holes and cavities in mountains. This would greatly increase the possibilities for creations on the maps.

Below, a video showing exactly what I mean and an image from the video to illustrate.

• Terrain and mountains with holes:
https://youtu.be/_xt4Hoy6CEk

Other suggestions I gave in other posts.

• Water beneath land and mountains
https://youtu.be/qlMF69CDa84

• Water at different levels
https://youtu.be/VeYk7y4hzeY

• Waterfalls, please!
https://youtu.be/1xr2p0_ERN4

• Gizmo for 3D rotation, please!
https://youtu.be/0sSU8-AUDH4