Portals

Portals are part of the new Abyss layer update.

There are two types of portals, PortalA and PortalB.

PortalA spawns in a dungeon-like room in the Abyss layer.

PortalB spawns together with PortalA, but in a random big cave that's already loaded or in a long tunnel somewhere in the mines.

You can only go through these portals as Coruscent Miner (CM)+

The Portal Room spawns with 4 additional chests, containing ores from Glitched, Warped and some ores from Abyss.