Portals to another world

My early morning walk around BWI yielded a good crop of manhole covers. I still find the variety and longevity of these things a little bit surprising. That Bell System logo hasn’t been used for decades.

Whether made in USA,

… or India,

… or even Wabash Indiana, these cast iron disks do their job year in and year out with very little complaining, and often look good doing it.