Deathloop: How to Open the Updaam Cave Safe

In Arkane Studios' Deathloop, one of the hardest puzzles in the game is finding the safe code for the Updaam cave safe. The safe is located under Dorsey Square in Updaam. To find it, travel past the hackable terminals and over the side of the wall to find a cave on the right. Inside, players will discover a map with a triangle on it, and three triangles to the right scratched into the wall. Three Deathloop codes are needed to open the safe. They are obtained by matching up the triangle points with overworld positions, finding the numbers in each location, and entering them in the correct sequence.

Source: Screenrant