Key points of Rise of the Tomb Raider - Glacial Cavern
Relics
Tomb
Monoliths, Archivist maps, Explorer satchels
Documents
The map of the location presents whereabouts of all the collectibles that you can obtain in a given area. Each type of collectible has been marked in a different way, to make it easier to tell them apart. Numbers provided by the markers are references to the walkthrough - each collectible, apart from being marked, has been described and shown in a screenshot. If you have any problems finding a specific collectible, find it in the walkthrough by its number on the map. Collecting all of the items and completing challenges is required to explore the location in 100%.
Glacial caverns is a transfer location, where there is not much to see. The map has been marked for Relics and Documents, which are the only interesting things here. A separate curiosity is the Tomb, which you can visit to find an Archivist map, one of the Documents and learn a new skill.