How do i flatten a very large part of my terrain?

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#1

So im trying to make a large part of this area below flat (except the river and mountains)
Is there anyway to make it flat without it taking a long time?

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#2

You could make like a part/terrain thing and then negate it.

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#3

How? is it a settings or something? can you show me?

#4

Try your best to model what you want deleted, then you like subtract it from the terrain. It’s hard to explain but try this

#5

@quarryilol did it work? Did you use it?

#6

Use the Select tool first on the Terrain Editor and then press Delete. The second method is to use the Flatten tool with a small size so your PC doesn’t lag in the process, making it faster to do.

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#7

If you go to the Region tool in the Terrain tools, then use the Select tool you can drag across a large area then use the tool handles to pick the area you want to Fill it to raise the area in the foreground of the picture, or if you want to shave the top of it off to flatten it you can select a section just into the flat area and Delete it.

#8

No, i still dont understand what you meant my that