Weird Shadows on Terrain

Questions & Answers
1

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I am getting weird shadows on the hills in my terrain. What is the cause of this and is there a way to fix it?

This is on Fantastic graphics setting, and very high shadow resolution.

Thanks in advance.

2

I upgraded to Unity 5 and this is not a problem anymore.

I think it might just have been my graphics card or a bug in Unity 4.