Some cabinets can become very-very hidden over time. One Took me ages to find, could see it on the map. later transpired the owner of the nearest house had sneekly moved his garden fences so fencing in a fair chunk of common land. And had camoflaged the cabinet as it was now in the middle of "His" back garden.
Another I can think of as a low garden fence build all around it by the housing developers which we have to climb over.
Some get covered or surrounded by vegitation over time. One i can think of is in the middle of a large blackberry bush behind a very large tree. a wobbly bit of scaffold board is set into the ground so you can cross a dyke then shuffle along a narrow ledge to get to. No way can you spot that one from the road.
thats assuming your cabinet is not a "piller" type, some of which look like a concrete bollard. And many of these will be a lightning protection unit rather than a cabinet.
Oh and rust at the bottom, that would be due to dog wee. When the sun is out and it's a hot day the fragrance is quite
gagging