Sharp Shadows on Landscape

Hey guys, so I’m just learning to make landscapes and playing with sky atmosphere. I noticed after awhile that I have these sharp lines with the shadows. It lines up perfectly with the sections of the landscape in the second image. How can I go about fixing this?

Alright so quick update, it seems like it was an issue with the terrain itself. I tried the smoothing tool over sections that got the hard shadow lines then built lighting again. Looks much better, I’m also using dynamic lighting now and that also looks much better, so thanks for mentioning it :smiley: