@ViceVersa There is a hole in the cave right near the first capture, i have two more captures down a small ways near other holes. I added another screenshot to show this. The light does not directly fall on the captures though.
Adding a skylight in the cave works, but the light looks faked and it affects the entire world. That makes everything brighter which id like to avoid if possible. Lastly, these are assets i migrated from example content and sadly there are no AO maps for the cave walls and the floor. I am too new to know how to create those on my own at the moment. Thanks for the input so far!