PC game about mining gnomes/dwarfs that I played as a kid. Anybody know what it is?

I remember, quite a few years ago, playing a PC game about mining/digging. You controlled a single or bunch of little gnomes and you had to dig tunnels, set up camps, etc. I think you were supposed to be looking for something. Rings, maybe? And you would run into enemies as you went deeper into the ground. And there was something about a blue genie-ish creature/character, I’m pretty sure. Sorry for lack of memory! This has been bugging me for ages. Does anybody know what I’m talking about?