Making places look like they're underground

[GoGoTauren]

Im making a map in sunken ruins, and it has like a bright tropical sky. Then, when you go into a dungeon, the sky kinda ruins the dungeon feel.

Does anyone know anything i could do to make my dungeon feel like a dungeon without editing the sky for all players?

 

[spencenator]

I believe there is an effect doodad named cave or cavern or something. As i recall, it went across your sky to create the dungeon feel. But i think it went across the whole map. Nonetheless, you should mess with that

 

[manstie]

It's a big rock dome, and it's pretty big. Im pretty sure its in doodads.