Hello,
I have an imported mesh around the house. And I have a UE4 landscape as well. Where they intersect on the left of the image I have these dark shadowy areas. I am sure they are not shadows. Any ideas as to why this is happening. I get no errors when I build the lighting.
Quite possibly a dynamic very low quality ‘‘preview’’ shadow that will disappear when you build your lighting. That’s my quick guess.
I still get it when I build the lighting. Could it be a light mass issue…I am noob.
If I rotate the light source manually, I goes away. But it comes back when I build the lighting again.
Increase the lightmap resolution of the landscape to something between 4-6 + rebuild the light again 
I deleted all the light actors. Sky Sphere, Directional Light, Sky Light and Atmospheric Fog. I then replaced all of them, built the lighting and everything is fine now.
Thanks for the feed back.