Not sure what this is / was for, but it looks like some sort of generator in the middle of Cockfield Fell. The pipe coming out of it might suggest a water pump, but who knows? The 'osses didn't have a clue either.
View attachment 706546
Gas monitor?
It could be, there are mine workings under there, but it looks quite an age and I thought gas monitoring was just for landfill sites?
I initially thought the vertical pipe was an exhaust. I'll have to get a better look next time I'm over there.