The earth itself is warm there - in these places heating pipes run close to the surface. Usually, a small room is made underground, in which the technical equipment of the valve, sensors, etc. is located. The temperature in it is high, it is very hot there - this is why the earth warms up.) And iron covers are not ventilation, these are access points to such premises.)
I hesitated when I was about to type "vent"..... because I wasn't really sure what they were, but I thought since the cats seemed to be hanging around it, that warm air might be coming out. Thank you for the explanation about the heating pipes.
The earth itself is warm there - in these places heating pipes run close to the surface. Usually, a small room is made underground, in which the technical equipment of the valve, sensors, etc. is located. The temperature in it is high, it is very hot there - this is why the earth warms up.) And iron covers are not ventilation, these are access points to such premises.)
I hesitated when I was about to type "vent"..... because I wasn't really sure what they were, but I thought since the cats seemed to be hanging around it, that warm air might be coming out. Thank you for the explanation about the heating pipes.
🙂😉