Landmarks can be found throughout the Siberian Wilderness. These are usually conspicuous wood or rock formations, dead adventurers and the likes. At these landmarks Lara usually finds Resource Crates, single Resources (e.g. Wood, Feathers), Salvage, Ammunition (in the form of metal ammunition boxes), or even Artefacts.
When Lara comes by a landmark, it is marked down and can easily be found using Survival Instincts.