Enter Dahl mine is an objective in the Story Mission, The Cost of Progress in Borderlands 2: Commander Lilith and the Fight For Sanctuary
- Head out of the Backburner and return to the Dahl Abandon and go to the nearby Catch-A-Ride Station.
- Summon a vehicle and then go straight over to the West.
- Go straight on through into the new opening for the mine.
- Just head straight inside.