A new overworld ruined portal struc...
A new overworld ruined portal structure could be designed as a dangerous ancient Nether shrine built mainly from Nether Bricks, Red Nether Bricks, Polished Blackstone Bricks, and cracked variants, looking like it erupted into the overworld long ago. The structure would be around 25x25 blocks wide with a fully lit Nether Portal at the centre, partially framed with Crying Obsidian and surrounded by broken arches, chains, lava cracks, soul fire, and damaged towers to give it a ruined fortress feel. Beneath or beside the portal would be a hidden Piglin Spawner room made from dark blackstone bricks with lava in the corners and gold blocks as bait for players exploring deeper inside. Around the structure there could be 2–4 loot chests hidden under cracked flooring, behind lava.

