THE GREASE PIT (Rt 66 nr Phelps MO)
Plenty of automotive history passed through these busted wooden doors. This was an actual service station that pumped gas, plus did maintenance and repairs.
Down below is a grease pit, made of mortared native stone. Back then, an oil change also commonly involved a "Lube Job" for lubrication. Fittings under the car had to be greased.
Today's cars don't need that, but quick oil-change places still use concrete-lined pits to access the filter.