Another secret district has been unlocked for us to explore in Brazil! And this time we have a much shorter amount of time to complete it. But at any rate it's the same as before, mastery prizes will be awarded and there are special items required to do certain jobs.
The item you will require is the Jungle Map.. It is available as a free gift and also as a reward for completing a job.
Just make sure you use your 2x Loot Crew member and stock up on them before mastering so you can get them at barely any expense.