BCN Marathon Challenge 2014: Not a toll island on the summit level of the Tame Valley Canal - it's a safeguard in case of a breach of the canal, as stop planks can be inserted each side of the island to stem the flow of water.. Birmingham Canal Navigation, United Kingdom, on 24 May 2014 at 14:37, image #129

Photo 1405241437311D48147HaraldJoergens
BCN Marathon Challenge 2014: Not a toll island on the summit level of the Tame Valley Canal - it's a safeguard in case of a breach of the canal, as stop planks can be inserted each side of the island to stem the flow of water.. Birmingham Canal Navigation, United Kingdom, on 24 May 2014 at 14:37, image #129

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