Castle Loch Causeway is a causeway situated on Black Loch near Callan Castle.
Donald and Douglas once got caught here between a fallen tree and a landslide for several hours until Harvey, Judy and Jerome rescued them.
Fergus once crossed the causeway when he ran away after Diesel had played a trick on him.
| Locomotives | Emily | Jinty and Pug* | Crovan | Lily* | Julie* | Gator* |
|---|---|
| Rolling Stock | Emily's Coaches | Helen | Bertha and Millison | Jeremy and Jackie | Jonah and Jane |
| People | Kevin Volley | Cyril the Fogman | Lord Callan |
| Locations | Callan (Engine Sheds) | Kirk Machan | Misty Valley (Cyril's Cottage) | The Campgrounds | Black Loch (Causeway) | Callan Castle | Harwick Harbour |