When Nature Calls is a location-based challenge in Hero's Pass.
This challenge is worth 1 Badass Rank.
- In the beginning of the level. This toilet is located next to the helo pad across from the vending machines.
- Make the jump with the gap in the bridge. There is a grinder Southeast of a Hyperion 'Emergency Supply Cache' The toilet is between the building and grinder panel on a ledge.
- In the last area to the Southwest. There is a lone opened structure with a toilet next to two crates and a shipping container.