This is another spot where you can get additional free gold bars but getting to the actual loot will require some well-planned jumps and climbs. Check the steep valley along Granite Pass, south of Cotorra Springs. Your landmark will be the tall wooden train bridge overlooking the valley. If you look down at the valley, you’ll find a train wreck. Make sure to save before attempting this since there’s a high chance of injury or dying.
Getting down is treacherous enough with your horse so it will be a good idea to carefully slide down to the valley, unless you’re confident about your horse riding skills in the narrow and steep slopes. Your objective is to reach the vertically tilted train car.
Climb the slope beside the train car and find a narrow gap where you have to do run and jump to climb.
Run up the slope but make sure not to stand in the narrow gap shown below since for some reason, Arthur will trip and slide back down, damaging him in the process. Make sure to turn to the right immediately after reaching the top of the slope.
Once there, turn around and find a gap you should jump across. You’ll have to run before jumping so make sure you’re at least at the right distance as shown below.
After reaching the other side, you’ll have to do another jump to the train car. You’ll have to judge the correct distance since jumping too far or too near will result to you sliding down and missing the flooring.
Drop down inside until you reach the bottom. The two gold bars are on the floor. Pick them up and don’t forget to get the Aged Pirate Rum and Valerian Root as well.
After getting them, you can climb out the train car and exit through the opened door on its side, access your camp or just save and load. When the game loads or when you start camping, it should take you at a safe, convenient distance away from the train car, without having the effort to climb back up or calling your horse.