Caves - PLEASE help me!

Yo guys, thank you so much for opening this thread!!

So recently I started playing DST with my friends, and oh boi oh boi, we've created a server and played untill day of 38, and we forgot to turn of the caves. We created a lot of stuff and it would be a bummer to restart from the begining just so we can use the caves. 

So my question here, can I somehow enable them? 

Thank you so much guys! 

AND as always, don't starve