It sound like you had a very productive day in rearranging the garage and making space for the car. It always feels good to get a project like that done.
There are no oil drills around here, so I have no clue what that thing is inside the fence. Of course see fences like that around the power station things, but even without a sign it would be self explanatory with the cluster of small towers, wires and giant insulators inside it.
The garage project needs a bit more work but it is getting there. Things tend to collect and I'm not good about letting go of them.
I can totally understand that. I have been working off and on over a year to declutter my possessions. I am not shooting for minimalist or anything near it, just wanting to clear out all that I am not using or will never use again. I was never a hoarder, but if something I no longer needed or wanted was still good, I always tried to find someone else that could use it or donate it to some charity store or the such. My last house was larger and I could keep more "stuff", now there is not nearly enough place for it all. I have gone through the bulk of it, but it still needs a good deal of refining. I guess I need another "spell" of continuing on it soon. It's not that fun, but it does feel good to make visible progress.