Look for the blue lights. :D

wow guys, thank you very much for your support!

yesterday i finally found another mine and it was indeed an older dwarf tower. Looking from high ground seems to be a good idea to me though :)

You could always put your seed into the
Valheim World Generator: (https://valheim-map.world/) Kinda cheating I guess but you could find them easy.

Do you have the cape yet, or are you just starting?

They're generally denoted by either a) A dvergr outpost with no dvergrs but a TON of seekers (follow the staircase down), or by a massive staircase with blue lights on it. So look out for dvergr outposts and blue lights. You may have passed up a few mines thinking they were dvergr towers.

Originally posted by Bravely Bold Sir Robin:

They're generally denoted by either a) A dvergr outpost with no dvergrs but a TON of seekers (follow the staircase down), or by a massive staircase with blue lights on it. So look out for dvergr outposts and blue lights. You may have passed up a few mines thinking they were dvergr towers.

Marble staircase. Abandoned towers with wooden staircases are just ruins.
I can't always see the blue lights either, but that might just be me.

I found it easiest to climb up the spires and look around. There's a formation of one large spire flanked by two smaller ones at a slighter angle. That formation seems to only happen with a mine in the middle of the three.

Just to make sure, but, is this a new world generation after the mistlands went live, or an old one where you may have explored some of the mistlands?

If it's one you may have explored into the mistlands, you're going to be unlikely to find dungeons.

If it's a new one look for larger land masses of Mistlands and see if that helps, if your areas haven't been that large.

let the monsters tell you about it.
take out your pick and make a big racket every so often. If you get jumped by more than 3 seekers, odds are there is a mine nearby. 3 seems to be the magic number, anytime you find 3 together scout a quick radius. Only seekers, other mobs are just RNG.