A FAINT LIGHT - FIND THE MAYA RUINS
After a brief introduction you’ll gain control of Lara. The first thing you need to do is get out of the cave, so mash the correct button to free her from the debris and then hold Up to crawl through the tunnel until you reach a large cavern.
You need to climb the craggy wall ahead of you, so jam the climbing axe in, then continue to traverse upward to the path above. Head foward and around to stumble across the ruins.