Glacial Basin in Subnautica: Below Zero

Glacial Basin: 68 m above sea level down to 209 m deep. 5,113 baked spawn slots, 477 pins inside, and 4 named places within it.

Data: Subnautica: Below Zero game files (build of 12 Aug 2025), read and drawn by PinDrop. (c) Unknown Worlds Entertainment. PinDrop is fan-made and not affiliated with Unknown Worlds Entertainment.

Map of Subnautica: Below Zero with Glacial Basin outlined
Cave entrances (3)Bases and sites (9)Data boxes and PDAs (15)Open the map focused on Glacial Basin →
Depth
+68 m to 209 m
Median slot
+5 m
Area
0.47 km²
Pins inside
477

Named places inside

Phi Robotics Center, Glacial Cave, Parvan's Bunker, Frozen Leviathan Cave

What spawns in Glacial Basin

Ranked by expected spawns per new game over the area's 5,113 baked slots. “Share” is how much of the whole map's supply of that thing falls here.

Resources

Resources that spawn in Glacial Basin
ResourceSlots that can hold itExpected per gameShare of all its spawns
Quartz3,230854%
Limestone3,177732%
Magnetite99188%

Creatures

Creatures that spawn in Glacial Basin
CreatureSlots that can hold itExpected per gameShare of all its spawns
Arctic Peeper1,806281%
Bladderfish1,806282%

Spawn numbers are a model read from the game's spawner tables and 921,892 baked slots, not verified in a running game.

Pins inside Glacial Basin

477 map pins lie in this area. Open a layer to see all of its pins on the map.

Creatures placed here by hand: Pengwing (78), Skyray (52), Snow Stalker (26).

Caves, bases and sites in Glacial Basin
PlaceKindDepthPositionMap
GlacialBasin WaterEdgeTransitionTransitions+1 mx -1150, z -859Show on map
GlacialBasin Teleporter PropsTransitions+24 mx -1130, z -728Show on map
Precursor Prison Teleporter ToArcticSpiresTransitions+21 mx -1113, z -732Show on map
Alterra installation, Glacial BasinAlterra bases+17 mx -1496, z -1109Show on map
Alterra installation, Glacial BasinAlterra bases+12 mx -1512, z -848Show on map
Alterra installation, Glacial BasinAlterra bases+26 mx -1394, z -675Show on map
Alterra installation, Glacial BasinAlterra bases+14 mx -1280, z -1181Show on map
Alterra installation, Glacial BasinAlterra bases+19 mx -1371, z -945Show on map
Alterra installation, Glacial BasinAlterra bases+9 mx -1274, z -1028Show on map
Alterra installation, Glacial BasinAlterra bases+17 mx -1158, z -724Show on map
Architect (Precursor) site, Glacial BasinArchitect sites114 mx -1222, z -978Show on map
Alterra installation, Glacial BasinAlterra bases+11 mx -1036, z -546Show on map
Cave entrancesCave entrances62 mx -1284, z -1059Show on map
Cave entrancesCave entrances+13 mx -1367, z -1114Show on map
Cave entrancesCave entrances+10 mx -1187, z -1153Show on map

Other biomes

About Glacial Basin

Glacial Basin reaches 68 m above sea level down to 209 m deep by the heights of its 5,113 baked slots and covers 0.47 km² of the game's biome grid. The resource with the highest expected count here is Quartz (about 85 per game), the creature is Arctic Peeper (about 28). The underwater class of the grid is counted with it.

A pin belongs to the area of the nearest baked slot within 30 m (3-D, so a cave counts for its own area); a pin with no slot nearby takes the biome-map class above it (2-D). Placement of pins, depth and the spawn ranking are read from the game files; the spawn numbers are a model and have not been verified in a running game.

Depth is metres below sea level, read from slot heights. Coordinates are the game's world metres, x east and z north.