Is there a way to remove cliff?

[talauna]

Wonder how long it would take to remove this cliff?

or remove these?

[stya]

It will simply be impossible for 2 reasons.

First there are mountain tiles, you can't level those.

Second there is a lake, this will limit leveling around it from below.

[Bearcub]

Why to remove that helmet-rock? you just need to settle on the top