The Deep Sinking

In this week's episode of Waterways, Dick and the crew of Rambler leave the urban landscape of Dublin behind them to embark on the next leg of the journey. The outside world disappears as the canal dives into the Deep Sinking - a narrow rock cutting filled with extravagant vegetation. It runs from Castleknock to Clonsilla. Dick and the crew struggle slowly through with Rambler. Dick wonders how on earth this phenomenal cutting was built over two hundred years ago