I don’t import any mesh, I just create a new flat landscape within UE4. Everybody can try this out within 2 minutes. Create a new project, create a new landscape, trace from the mouse position through the landscape. That’s all. 
I don’t import any mesh, I just create a new flat landscape within UE4. Everybody can try this out within 2 minutes. Create a new project, create a new landscape, trace from the mouse position through the landscape. That’s all.