netherack and magma blocks along with obsidian ruins spawned in overworld village.
Linked issues
is duplicated by 5
MCPE-160820
Village crops generate on netherrack/magma blocks when intersecting ruined portal
Resolved
MCPE-114455
Villages generate unexpectedly
Resolved
MCPE-114763
Ruined portal generation can overwrite village structures
Resolved
MCPE-141278
Village/ Ruined Portal
Resolved
MCPE-228064
Ruined portal appears in village house
Resolved
Ruined nether portals spawn at any height, either overworked or nether. This means they can be found underwater, buried in sand etc... I think it is just a coincidence that it happened to be in a village