Saturday 14th July 2012 Ramble 8: Northchurch lock (no. 49) to Marsworth

Saturday  14^th July 2012

Ramble 8:  Northchurch lock (no. 49) to Marsworth, a 5 mile walk. The weather was very damp!

We re-joined the canal at Lock No. 49/bridge No.139. We were soon walking across the canal at Dudswell to follow the towpath on the other side. All along this section the West Coast Mainline railway line was very close and we were surprised as to how frequent the service was. We saw many Virgin Pendolino trains.

A little further along was Cowroast Lock and associated buildings. It is a busy place with a large, but well-hidden Marina.  In the past the area was apparently called Cow Rest, as it was where cattle were grazed before transportation to markets in London.  A Roman road (Akeman Street) and an old drover’s route are nearby, crossing over the Chiltern Hills (and there I was thinking the cows would go in the barges along the canal!). 

Cowroast Lock marks the end of the Grand Union Canal’s climb up from the Thames at Brentford to Tring Summit Level. This is a 3-mile stretch of canal in a deep and wooded cutting (a major feat of engineering; lined with bricks, but still leaky). It is usually very quiet but today we came across an orienteering event with people running in both directions and also in canoes on the canal, all with maps strung around their necks. Most were mud-splattered as the towpath was not dry and some were more fragrant than others!

Still more people were loaded down with camping equipment on their backs, with brightly coloured orange waterproof covers (as now it was raining and they looked a little down).

Half-way along the cutting we saw signs to Tring Railway Station and further on, as we came out into a brighter section with less over-hanging trees, we met a swan family on the towpath. One of the cygnets practised swimming in a puddle while the parents stood on guard, causing a minor holdup, as people were reluctant to get too close.

Other hazards included fallen branches across the towpath and larger puddles, both due to the inclement weather of late, no doubt.

At Bulbourne Junction, where the Wendover Arm joins the main Grand Union Canal, there is a dry dock and other buildings that look older than many we have seen previously. In one large building, until recently, were made lock gates and other things for the canal. Now, it houses an iron works for large scale restoration projects, some of which were on show outside.

The Wendover Arm was originally non-navigable and built just to feed water, from springs and streams in the Wendover area, into reservoirs supplying the canal at the high level (all of 120m). This eliminated the need for a tunnel. The arm was widened to accommodate traffic but then fell into disrepair. This ‘withered arm’ is now in the process of being restored.

As we were walking past Bulbourne Junction we saw a lovely boat and butty both with Fellows, Morton and Clayton Ltd livery, going through the lock. 

We passed several locks, going down now, and saw reservoirs to our left, before completing our walk at Marsworth Lock No. 132; the Bluebells Café to be exact to get dry and have a warm drink.