In Subnautica, players can uncover valuable resources and lore by exploring various Alien Caches, also known as Sanctuary Caches. These caches contain Ion Cubes and artifacts essential for advancing in the game. Each cache is uniquely situated and requires specific preparations for successful access. Here’s a comprehensive guide to locating and accessing these hidden treasures.

Alien Cache Locations and Coordinates

1. Deep Sparse Reef Cache
– Location: Inside a cave near the Sea Treader’s Path Wreck (Wreck 7).
– Coordinates: Approximately -929, -287, -760.
– Requirements: An upgraded Seamoth for deeper underwater access.
– Contents: Six Ion Cubes and data terminals with Precursor information.

2. Northern Blood Kelp Zone Cache
– Location: Deep within a cave in the Northern Blood Kelp biome.
– Coordinates: About -554, -534, 1518 (approximately 560m deep).
– Requirements: An upgraded Seamoth, and a Purple Tablet to access the cache.
– Contents: Four Ion Cubes and data hubs.

3. Dunes Sanctuary Cache
– Location: Situated within an ancient impact crater inside the Dunes biome.
– Coordinates: Around -1187, -378, 1130.
– Requirements: A vehicle is essential due to the depth and the presence of dangerous fauna, specifically Reaper Leviathans.
– Contents: Four Ion Cubes and an Architect databank.

4. Lost River Laboratory Cache
– Location: Found within the Lost River biome at a special laboratory site.
– Requirements: Multiple Purple Tablets (three are typically needed) and an Orange Tablet.
– Contents: Additional Ion Cubes, data terminals, and occasionally rare items like Cuddlefish eggs.

How to Access the Caches

– Tablets Required: To gain access to each cache, players must possess Purple Tablets (at least three for most caches) and, specifically for the Lost River Laboratory, an Orange Tablet.
– Entry Method: Each cache is protected by a forcefield or a locked door that will dissipate upon using the appropriate tablets.

Tips for Exploration

– Vehicle Usage: Employ a Seamoth or a Prawn Suit that has been upgraded with depth modules to ensure safety and access to the deeper biomes.
– Oxygen Supplies: Always carry sufficient oxygen supplies or ensure that a vehicle’s moon pool base is nearby.
– Environmental Hazards: Exercise caution in perilous areas such as the Dunes, to avoid encounters with hostile creatures.
– Resource Gathering: Inside the caches, players will discover not only Ion Cubes but also data terminals which provide valuable lore about the Precursor race. Occasionally, unique items such as Blood Oil or creature eggs can also be found.

Summary

To effectively locate and access Alien Caches in Subnautica, players should focus on exploring key locations: the Deep Sparse Reef, Northern Blood Kelp, Dunes, and Lost River Laboratory. Preparation is crucial, involving upgrades for vehicles, the collection of required tablets, and caution against the dangers of the biomes. Once accessed, these caches offer significant rewards in the form of Ion Cubes and rich lore from the game’s mysterious Precursor civilization. Happy exploring!