Portals: keys, armour and opening
Prehistory and Sky portals: from materials to opening
These two sanctuaries have their own keys and requirements. Do not apply these instructions to The Sift, Nether or End portals.
1. Find the sanctuary
Explore underground in the Overworld: the portals are separate, inside large open underground spaces with mines and structures. Look for Umbral de los Titanes for Prehistory and Corona del Alba for Sky. Save the coordinates when you discover them. Old surface arches are decorative; using a key anywhere will not open a passage.
2. Prepare your armour
- Prehistory: an equipped Astralita helmet, chestplate, leggings and boots. A complete Ámbarita set also works.
- Sky: all four Ámbarita pieces equipped.
Items in your inventory, elytra instead of a chestplate and mixed materials do not count.
Progression is Enderite → Astralita → Prehistory → Ámbarita → Sky. Find Astralita in the End and Ámbarita in Prehistory. Read the mineral guides for mining; in Java, search for each armour piece in JEI and press R to check its current recipe, template and upgrade. Collect all four pieces first.
3. Craft the Prehistoric Relic
You need 4 moss blocks, 2 T-Rex feathers, 2 ender pearls and 1 compass. Use a 3×3 crafting table:
- Top row: moss block / T-Rex feather / moss block.
- Middle row: ender pearl / compass / ender pearl.
- Bottom row: moss block / T-Rex feather / moss block.
Use moss blocks, not carpets. T-Rex can drop feathers, but a drop is not guaranteed in each fight. Before entering Prehistory for the first time, trade with another player or prepare a Jurassic Aeon Delve expedition such as The Lost Valley, which has a T-Rex boss. This temporary dungeon is separate from Prehistory; read the dungeon guide for its portal and group preparation. You do not have to enter Prehistory first to obtain feathers.
4. Craft the Sky Key
You need 4 phantom membranes, 2 amethyst shards, 2 ender pearls and 1 compass. Use a 3×3 crafting table:
- Top row: phantom membrane / amethyst shard / phantom membrane.
- Middle row: ender pearl / compass / ender pearl.
- Bottom row: phantom membrane / amethyst shard / phantom membrane.
Find moss in lush caves, amethyst in geodes, pearls from Endermen and membranes from phantoms. A compass uses 4 iron ingots around 1 redstone dust. Check ingredients in JEI.
5. Open the portal
- Reach the correct active sanctuary arch in the Overworld, with food, tools and the required armour equipped.
- Hold its relic or key in your main hand, not your offhand or just your inventory.
- Stand near the arch and right-click; crossing its entry area with everything ready can also start opening it.
- Stay close for about 4 seconds, keep the key selected and keep your armour on. Travel occurs when charging finishes. The key is not consumed.
Moving away, changing the held key, removing armour, dying or losing access to the dimension cancels opening. Fix the cause and wait a few seconds before trying again.
6. Return and troubleshoot
Inside Prehistory use its relic; inside Sky use its key. You can also type /volver. Returning requires no armour. Save your base coordinates: a server restart clears the remembered return point, so /volver then uses a safe Overworld location near the origin.
- A message to find the sanctuary: you are away from the active arch or in another dimension.
- Opening will not start or is cancelled: check your main hand, all four equipped pieces of the same material and your distance from the arch.
- Dimension not loaded or portal disabled: tell staff the exact message, dimension, time and coordinates; repeated clicks will not fix it.
/mundos shows travel help. /prehistoria and /cielo are administration shortcuts, not normal player access.