Sentinel's Nest is an Unexplored Territory in Xenoblade Chronicles X. It is located in Noctilum. It consists of the terraces in the northeast corner of the Divine Roost. The Treasure Boxes here are guarded by hidden high-level Aeviters. As with all Unexplored Territories, its discovery yields an achievement ("Searching Sentinel's Nest"). Sentinel's Nest must be discovered to complete Off the Record (archaeological).