REQUIREMENTS:

• 1. You MUST have earned the Texas Treasures achievement from the Midland Ranch Heist:
  (You must have earned this achievement on Overkill or higher for it to count, thanks masiha, blinya & Youtube: Unknown Knight)

MAP OVERVIEW:
The steps for this achievement are simple, make sure you are (somewhat) agile and lightweight because there will be parkour involved.

STEPS:
Your hidden item is locked away in a special safe inside container #42 (which is locked).
To open this container you need to find its key.
To open the safe inside the container, you need the Sheriff's Star, which will be granted to you on spawn if you have gotten the Texas Treasures achievement (see Requirements step 1).

• This achievement can be done on any difficulty!

Your key to open container #42 is hidden inside a metal box on a container pile at the Freight Storage.
To reach it you need to perform a small series of parkour movements.

To reach the metal box, follow the steps on the image:

• 1. Starting on the single crate, jump on the stacked crates
  
• 2. Jump to the white container
  
• 3. Jump to the container island
  
• 4. Head to the metal box

The metal box will be lockpickable, inside you will find the key for container #42.

Now you must reach container #42, which is located beneath the red crane's foot away from the warehouse.
One way to do this is to access the bridge from the Warehouse and do a small series of jumps, detailed in the steps below:

• 1. Jump on the train wagon from the bridge
  
• 2. Jump to the small ledge made by the containers
  
• 3. Walk the ledge and reach the doors to container #42, then open them with your found key

Once inside container #42, you will see a special safe, which is easily openable with your Sheriff's Star.

Inside the safe will be your hidden item.
Open the safe to earn your achievement,
(but dont forget to take the item inside!).