North Circular Road foot-tunnel

Originally posted in gwl and guessed by Tetramesh.

This is the foot-tunnel that takes the Dollis Brook under the N. Circular Rd, just west of Henly's corner. I'd driven over it hundreds, or maybe even thousands, of times without even knowing it was there. Now that I've walked through it, it's added a whole new dimension to my trips round the N. Circ!

I originally titled this 'Where was Alf?' but as there are full-stops between the letters maybe it's an Animal Liberation Front tag. Liberate your goldfish from its bowl and set it free in the Mutton Brook...