Sometimes we deal with correcting GIS information for our physical plant: meters, customer sets, etc., (gas company). About 5000 meters and associated stuff took an unplanned trip to the middle of the Indian Ocean. Dredging those suckers up from the abyssal plain was a miserable task. And expensive, too. :)
Actually, a tech managed to invert signs on lat and long values for these plant items. It got propagated to our maps. So Scotty beamed all the items down to the ocean depths. All of the altitude values were way off, as well. People running those maps off on plotters had a cow...
...there was zero topographic information. No cities or streets either.
Rather like Evo's street I think. Evo, check your GPS to make sure you, too, are not really at home under the sea.