lilithlite:

Something about giant machines that are able to completely alter the ecosystem around them.

Something about giant machines that are big enough to House cities on their backs.

Something about the creators of those machines becoming dependent on them for shelter.

Something about giant machines with fleshy insides.

Something about giant machines doomed by their purpose.

Something about giant machines continuing to fulfill their purpose even though their creators are no longer there, simply because they have nothing else to do.