A Field of Some Importance

Footpaths go places - right? You join one, go along it for some distance and then leave it. You have arrived. Perhaps you are now at the junction with another path, a rural village, a famous poet's birth place. Something. Anything. But not this one:

And don't be fooled by into thinking it leads to a reservoir - because it doesn't:

My faith in Hertfordshire footpaths has been destroyed.