Is there an easy way or does anyone have a tutorial on how to achieve this tye of walls i have to make them look like mountains
One of I’m sure a few ways to do it is to start by drawing your wall profile along a flat face. Then draw your curved wall(s). Then extrude profile and ‘Intersect with model’.
Then either close top faces manually:
or keep only one face of your intersected curved wall and use an extension like ‘Fredo Joint Push Pull’s’ Thickener to give it whatever width you want.
Lastly, you can use Scale tool to give ‘taper’ to wall if desired.
Is there any video tutorial to do this
Sounds like you should have a look at Eneroths Eroder extension.