Borderlands 2 - Caustic Caverns - The Lost Treasure - Follow Clues

Mission picked up in Sawtooth Cauldron (I think) to find 4 pieces of a treasure map, then follow the clues. Under the acid soaked railway: 0:05 In the warehouse on the shore: 0:30 In the digger&shadow: 1:10 Within Dahl&bloody sixth: 1:40 Also, if you&listening to the commentary, I found the rest of the map. Different mission. Minecart Mischief