I have found out your lighting in thealand4 Two0Two1 has a pretty important problem, ( My number two key button is broken lol) It's too dark,
So I bring a solution to you:
Go to Windows-->Rendering--->Lighting setting
and then you will enter in the window like the screenshot
Find Environmental Lighting--->Source
You will find out there are three choices :
Skybox ( which is your map)
Gradient ( The screenshot )
Colors
You can choose either gradient or skybox, then the "dark shadow" problem will be fixed!