4 ms·
The small wooden trapdoor acts as a plughole for a short section of the canal, allowing it to be drained into the culverted River Tib some 15-20 feet below for
by camtarn 8y ago
The small wooden trapdoor acts as a plughole for a short section of the canal, allowing it to be drained into the culverted River Tib some 15-20 feet below for maintenance.
The trapdoor itself can be seen at 15:00 in the video.