CDK - no shadows in custom hangar

Hi.

I planned to create a custom hangar using the Location Editor, utilizing custom 3D model. The map consists solely of water and a custom model of a city. In the editor, everything worked as intended, but after exporting it to the game, there was no drop shadows produced by the map (the city 3D model) only the shadows of the vehicles were present.
Do you have any idea why this happened?

I think this might be related to the lack of a .blk file for my location in content\pkg_local\levels, but I have no idea how to create one or what should be in it. Simply copying a file from other locations and renaming it doesn’t work.