Is it possible? It's been a while since I last played DST and I've made progress in a world I really don't want to lose or restart all over. While checking on the settings, I found out that you could actually tick the box "Add Caves". If I'm not mistaken you couldn't do that some time ago.
Does it actually generate sinkholes? Or does it regenerate the world with the same exact seed but with caves?
Note that this appears on my already generated world.