A time when the Piglins lived in the Bastion and before being survivors, in the bastion lived a soul called The Host and his two sons Rib and Snout,later he had the idea of creating a new type of armor for his Piglin Brutes, after smelting the trims he called them Snout and Rib. After all the process a hoglin escaped from the stable and exited the Nether in one of the connections(now known as Ruined Portals)and the exit had terrible effects on him,in the return he went insane, and his archers(now known as Wither Skeletons) too. The Eye (now Wither)after he went insane destroyed the connections to prevent the piglins from exiting and freed his Ghasts(lost souls of the Desert Temple,who had a strong connection with the Nether)and the Magma Cubes, slices of the broken trims(There only were 10 and 2 were broken,and there only remain 4 Snout and 4 Rib). Later destroyng all he went to the sand(Now called Soul Sand). Before that the Piglins worked on a material called Debris, perfect for The Eye,who always wanted an armor,now the Debris was destroyed and no more remain,i hope you find and rebuild the Nether.