devil's conduit, new river head, finsbury, london

c14 conduit that once supplied greyfriars and christ's hospital with water, now langishing unseen in the grounds of the waterworks in finsbury. flash from 30 foot did little to illuminate the interior, but there seem to be steps down to a pool. no lock on the gate, but a hedge, fence and drop down into the old inner pond make access difficult enough. guards and cameras too if such things put you off. . . .