how to get to the cliff in outlands canyon borderlands the pre sequel

I'm stuck on trying to get to that part of the map. I am trying to explore all of the places and I cant get to that spot though.

3

1 Answer

Having just done this myself:

You "unlock" the "door" by accepting a quest from the board in Concordia, available after finishing the story quest with Pickle. It's a quest from Hammerlock, asking you to retrieve trasher babies.