Creating a smooth terrain from terrain skirts automatically

[Ultratimsil]

i have created a terrain out of lines i took from a reference, the lines had multiple nods, and when i finished it create a stair like terrain and not smooth, so i have been doing it manually. 

as you can see in the picture the left side is what i did manually and on the right you can see the stair like terrain that i will be working on. is there a better method or an initiall approach i should take to avoid this amount of manual work?

Operating system used: Windows

[Marc H · Accepted solution]

It doesn’t look like you are using the Mesh tool?  With that, you can overlay Splines from your survey over the mesh and, with the magic wand, embed nodes into your mesh and elevate them in groups.  There are a few helpful videos on this process.  It will produce a very smooth terrain.

[Ultratimsil]

I think that's the way, i should have done it from the beginning.

Thanks