In Shadow of the Tomb Raider you can get to several murals. Each of them develops your dialect knowledge. This allows Lara to read new information and monoliths. In the Porvenir Oil Fields location you will find only 1 mural.
Additionally, in this location you will find 4 documents and 1 relict. We have marked all the secrets on the map to make it easier for you to find them.
Mural - MAMA ZARA - (1) znajduje sie we wschodniej czesci lokacji. Zaznaczony zostal na screenie powyzej.
Aby dostac sie do muralu musisz minac pulapki znajdujace sie na drodze. Czeka on na ciebie przy kamiennej scianie.
Hardhat (1) - is to the right of the Destroyed Bridge camp where you begin in this location,
A Lost World (1) - you will find this document near Destroyed Bridge camp.
The Truth (2) - you will find it after a cutscene with Jonah. Lara will direct him to a radio channel. If you don't continue with Jonah's mission it won't be completed.
Not Yet?(3) - you will find it near "The Beach" camp (check the screenshot).
Journal of T. Serrano 9 (4) - after the fight against your opponents, when Lara separates from Jonah, you'll find your way to the next diary.