Where is the entrance to Tek Cave?

The entrance is at 42.8, 39.2 on The Island.

What should you bring to Tek Cave?

This is the hottest and the coldest place you can find on The Island. Ghillie Armor is crucial to deal with the unbelievable heat in Tek Cave. Then the temperature will turn upside-down after you pass the border dividing the cave from the terminal, requiring player to change to Fur Armor. It's highly-advised to use charged Tek Armor to deal with both extreme environments. You will want to bring some Calien Soup and Fria Curry along with reserves of water and food, as well as Medical Brew: If you are burning or freezing, your natural health regeneration is suspended. You will need a lot of powerful weapons. It is best to use ascendant quality gear, such as a Tek Rifle, Tek Grenade, or any other weaponry. Bring any kind of ranged weapons (even a Primitive Crossbow is fine) to aggro lots of wild animals in the cave and make them fall in the lava pits. It makes the cave much easier, especially if you can send the Giga in the lava. Gigas, however, do not spawn on Gamma difficulty. There will still be a Giga guarding the entrance to the terminal area. Bringing sacrificial tames such as Carbonemys is a good idea to send them into the lava once you have shot it with a Pheromone Dart using a Longneck Rifle, drawing wild Dinos with it. Lesser Antidote will work fine if you get Mega Rabies from Megalania. It is completely possible to do the entire cave in around 35 mins with a set of Ghillie Armor and using some Cactus Broth, Where you just crawl through the cave and get zero aggro and no chance of losing tames; however, you cannot ascend unless the final boss is beaten (introduced in patch 267.0).

TEK CAVE

cave on The Island

View on The Island map →

Screenshots

with the interior map click to expand

The Cave

guide

The Tek Cave is a cave located at Volcanic Maw, the summit of the Volcano. Completing said cave, the player will teleport to the Hall of History, which leads you to the game's Overseer.

Note that the Cave entrance only opens for 5 minutes, so bring in your tames in time. After that, you have 60 minutes to complete the cave and start the boss fight. This includes that you must have passed the entire Hall of History. Everything that stays in the Hall of History after the timer has expired dies. If you try to teleport into the Hall of History via cheat commands, you die if the boss fight has already started (or is still in progress).

In Singleplayer there is no timer for clearing the cave, but the door still closes after a short time has passed. You can bring 50 creatures max

Hazards

Lava pits. Your unridden animals can easily fall into the lava from the narrow bridges, especially when they are on neutral and fighting the wild dinos. Because of this, it is recommended to bring more players rather than bringing in unridden dinos.
Getting knocked off your mount by wild Purlovia. Grenade can force unburrow the Purlovia, or you can use a Yutyrannus with its fear roar
Massive swarms of high level dinos.
The Giganotosaurus or Carcharodontosaurus guarding the entrance to the portal. If you don't want to fight it, make sure to lure it into the lava with ranged weapons where it will eventually die from exposure (although this could take a long time).
Extreme heat and chill: 60℃ in Tek Cave, -28℃ at the terminal, Hall of History, and Overseer Arena. It will burn/freeze players if they do not have corresponding gears equipped.
The lava in the caldera in front of the gate (before entering the cave) hurts a lot, so make sure your Dinos don't step into it. Make sure you bring enough Raw Meat (or Sweet Vegetable Cake for herbivores) in case one of your Dinos misstep to be able to heal them to max health if lava burned them.
Lava does 200 damage if you or your Creatures step into it
Both riders & following dinos can be stuck in the cave's geometry. For this reason, ensure that there is adequate distance between players & that each player carries a small subset of unridden dinos behind them, similar to a conga line.

Recommended Equipment

This is the hottest and the coldest place you can find on The Island. Ghillie Armor is crucial to deal with the unbelievable heat in Tek Cave. Then the temperature will turn upside-down after you pass the border dividing the cave from the terminal, requiring player to change to Fur Armor. It's highly-advised to use charged Tek Armor to deal with both extreme environments.
You will want to bring some Calien Soup and Fria Curry along with reserves of water and food, as well as Medical Brew: If you are burning or freezing, your natural health regeneration is suspended.
You will need a lot of powerful weapons. It is best to use ascendant quality gear, such as a Tek Rifle, Tek Grenade, or any other weaponry.
Bring any kind of ranged weapons (even a Primitive Crossbow is fine) to aggro lots of wild animals in the cave and make them fall in the lava pits. It makes the cave much easier, especially if you can send the Giga in the lava. Gigas, however, do not spawn on Gamma difficulty. There will still be a Giga guarding the entrance to the terminal area.
Bringing sacrificial tames such as Carbonemys is a good idea to send them into the lava once you have shot it with a Pheromone Dart using a Longneck Rifle, drawing wild Dinos with it.
Lesser Antidote will work fine if you get Mega Rabies from Megalania.
It is completely possible to do the entire cave in around 35 mins with a set of Ghillie Armor and using some Cactus Broth, Where you just crawl through the cave and get zero aggro and no chance of losing tames; however, you cannot ascend unless the final boss is beaten (introduced in patch 267.0).

What You'll Be Dealing With

assembled from what lives in this cave 18

UnderwaterHeavy carnivoresGrabs and pinsDismountArmour damageBleedPoison and gasAmbushColdHeat

Baryonyx — Stuns on hit in water and is fast both in and out of it.
Alpha Carnotaurus — An Alpha: far more health and damage than the ordinary variant, and it buffs nearby creatures.
Alpha T-Rex — An Alpha Rex: the highest-damage land threat most caves contain, and it buffs nearby creatures.
Carcharodontosaurus — Very high damage, and it gains a rage stack per kill that raises it further.
Carnotaurus — Fast mid-size carnivore that closes distance quickly.
Giganotosaurus — Enough damage to destroy structures and kill anything in one or two hits, and it enrages as it takes damage.
Rex — Very high health and damage. Roars, which stuns.
Tek Rex — A Rex with more health and damage.
Terror Bird — Fast, and glides down onto you from ledges.
Therizinosaur — High damage per hit and a fast attack; dangerous out of proportion to its size.
Yutyrannus — Its roar makes your own tames flee and stops you giving orders, which loses fights that damage alone would win.
Bring a Yutyrannus of your own, or a creature immune to fear.
Kaprosuchus — Grabs a survivor off a mount and carries them away.
Megalosaurus — Active and aggressive at night, sluggish by day. Its bite grabs and pins a survivor, and it hits hard enough to end a cave run outright.
Run the cave in daylight where the cave's day/night cycle allows it. Do not use splash damage near one.
Microraptor — Dismounts you, which is the entire threat — being on foot is what kills you in a cave.
Kill it before anything else in the room.
Arthropluera — Its ranged acid attack damages armour directly — primitive Flak breaks in one or two hits — and armour damage cannot be repaired if the piece is destroyed.
Wear Hide rather than Flak and carry Fiber and Hide to repair. Kill it at range; it out-damages armour faster than you out-heal it.
Allosaurus — Hunts in threes and applies a stacking bleed that keeps ticking after you break away.
Medical Brew. The bleed, not the bite, is what kills.
Dilophosaur — Spits blinding venom that also slows.
Purlovia — Buries itself and ambushes from under the ground, applying torpor on the first hit.
Watch the floor for the mound. It cannot follow once you are past it.

Each line above is a fact about the creature and its own in-game behaviour — attributed to this cave only because the cave contains it. It is not a walkthrough, and it does not claim to describe the layout or the route.