How to extend a slope / use slope blur?

Using Gaea Ask for Help
,
1

Hi all,

I have this heightmap I want to transform

image
image1010×384 52.8 KB

image
image936×392 44.1 KB
I want to create a extension of the terrain so that I can make interact better with the coast but I cant seem to be able to manipulate the slope with a single curve node.

I think I am supposed to use the slope blur but it make a undesired… stuff?

image
image903×354 88.2 KB

Thanks in advance!

2

I would do something like this.

It might be mildly overcomplicated, but that’s my way, I guess. :D
It has good level of control, though. :)

Help 12 (Adding a shore)_2026-03-07_22-21-55
Help 12 (Adding a shore)_2026-03-07_22-21-551354×797 56.8 KB

Help 12 (Adding a shore)_2026-03-07_22-23-26
Help 12 (Adding a shore)_2026-03-07_22-23-261354×797 77.7 KB

Help 12 (Adding a shore)_2026-03-07_22-21-59
Help 12 (Adding a shore)_2026-03-07_22-21-591354×797 70.1 KB

Help 12 (Adding a shore).terrain (38.5 KB)

3

You’ve got a good base already in the second screenshot, though. You could just do an erosion and mask it by height to affect only the area below your “actual” terrain.