Distant Mountains Issue - [ Solved ]

Hi,
Today I tried to make distant mountains for my route and that turned into a unexpected shadows on the terrain.
Please see the attachment.
Also, what is the proper grid size do you use of importing HGT data? 5x5 or higher? I used 19x19.
Can you also tell me the default size of one tile in Rail Works, is it 2x2 Kilometers?
What is the possible solution to get rid of these shadows?
Thanks
Today I tried to make distant mountains for my route and that turned into a unexpected shadows on the terrain.
Please see the attachment.
Also, what is the proper grid size do you use of importing HGT data? 5x5 or higher? I used 19x19.
Can you also tell me the default size of one tile in Rail Works, is it 2x2 Kilometers?
What is the possible solution to get rid of these shadows?
Thanks