Paul Burnham:
Penstock in the Spring
Paul Burnham:
The Penstock foot tunnel
Paul Burnham:
The Penstock foot tunnel (Hornsey - Turnpike Lane) - heading down to the East
Paul Burnham:
The Penstock foot tunnel (Hornsey - Turnpike Lane) - heading up to the West
Paul Burnham:
Penstock foot tunnel - downward view