necropoli

noun

1. (form-of, plural)plural of necropolis

   “The remains of a well-developed Prothean mining infrastructure dot the planet. Abandoned mines are connected to dead cities by collapsed maglev lines. Unlike the crumbling skyscrapers of Feros, Quana's ruins are reasonably intact. Unfortunately, this only made it easier for looters to strip the silent necropoli of anything valuable.”