"Find weapon cache" is an objective in the quest Note for Self-Person in Borderlands 2
Walkthrough[edit]
Head to the entrance of the Rat Maze in The Fridge. You need to fight your way on through it to the Crystal Claw Pit. Once there, clear the Rats that are present. Now go into the search area on the Western side of the massive cavern. You will find a big Dahl sign and below it a weapons chest that is covered in ice.
