All abandoned Auger mine locations in Borderlands 4
via polygon.com
Short excerpt below. Read at the original source.
The world of Borderlands 4 has many secrets to uncover, the abandoned Auger mines being one of them. Why were they abandoned? We don’t know! However, we do know that if you find an Auger mine and explore it, you will find a boss to fight, which means that you can acquire some powerful loot.