A classic Frith postcard showing the Avoncliffe aqueduct on the Kennet & Avon Canal.

A small aqueduct carrying the Aylesbury Arm over the Bear Brook. 20th February 2006.

A view of the Barton Swing Aqueduct from the Bridgewater Canal level.

The Barton Swing Aqueduct seen from the Manchester Ship Canal level. 1978

A boat on the Barton Swing Aqueduct. 1978.

Caton Road aqueduct on the Lancaster Canal. 14th August 2006. (Photo courtesy of Ralph Rawlinson).

Chirk aqueduct and, running parallel, the railway viaduct.

Chirk aqueduct seen from the southern end. 1st April 2007.

Passageway under the Grand Union embankment at Cosgrove. 29th April 2006.

Inside the passegeway at Cosgrove. 29th April 2006.

Edstone Aqueduct on the Stratford Canal.

Looking along Edstone Aqueduct showing the low level tow path.

Edstone Aqueduct seen from the railway line that runs beneath it. 1987.

The Engine Arm Aqueduct which carries a branch from the old BCN main line over the new BCN main line. 25th July 2006.

Ironwork detail on the engine Arm Aqueduct. 25th July 2006.

The Engine Arm Aqueduct from above. 25th July 2006.

Hazelhurst Aqueduct which takes one branch of the Caldon Canal over the other branch.

Hopsford Aqueduct on the North Oxford Canal. (Picture courtesy of David Stowell).

Aqueduct taking the Grand Union Canal over a minor road near Weedon. 13th April 2004.

Aqueduct carrying the Cromford Canal over the Midland Railway at Leawood. 19th March 2006.

The aqueduct that carries the Grand Union Canal over the former GWR London - Birmingham line at Leamington Spa.

The Lune Aqueduct on the Lancaster Canal. 21st June 2005. (Picture courtesy of Ralph Rawlinson).

The Lune Aqueduct from canal level. 24th September 2005. (Picture courtesy of Ralph Rawlinson).

The Lune Aqueduct from the north end. 14th August 2006. (Picture courtesy of Ralph Rawlinson).

The Marple aqueduct on the Peak Forest Canal, seen from the adjacent railway viaduct. 28th November 2003.

Marple aqueduct with the railway viaduct behind. 17th August 2002.

Cast iron aqueduct carrying the Worcester & Birmingham Canal over a road in central Birmingham. 31st March 2002.

The other side of the same aqueduct. 31st March 2002.

The Pontcysyllte aqueduct, Llangollen Canal.

Towpath view on the Pontcysyllte aqueduct. 13th September 2007.

The Pontcysyllte aqueduct seen from canal level.

Pool Lock Aqueduct where the Macclesfield Canal crosses the Trent & Mersey. 25th July 1998.

Aqueduct carrying the BCN New Main Line over a street in Tipton.

The Steward Aqueduct in Birmingham, now dwarfed by the motorway bridge behind it.

Trent Aqueduct, Staffs & Worcs Canal.

Aqueduct beneath the Worcester & Birmingham Canal near Alvechurch. 14th April 2006. (Picture courtesy of David Stowell).

Wolverton Aqueduct which takes the Grand Union over the River Great Ouse. 29th April 2006.

Wolverton Aqueduct from canal level. 29th April 2006.

Building and repair dates on Wolverton Aqueduct. 29th April 2006.

Cattle creep under the Grand Union immediately south of Wolverton Aqueduct. 29th April 2006.

View inside the same cattle creep. 29th April 2006.

Cattle creep on the north side of Wolverton Aqueduct. 29th April 2006.

Looking out from within the northern cattle creep at Wolverton. 29th April 2006.

Wooton Wawen Aqueduct on the Stratford Canal. 26th June 2005. (Picture courtesy of David Stowell).