The Old Iron Bridge is a bridge that crosses Cattle Creek between Rheneas and Skarloey on the Skarloey Railway.
After Proteus was sent to work at the slate mines on his first day and did not finish until late at night. His headlamp was broken, and he had to cross the bridge without a light. Proteus fell off the unsafe bridge and plunged into the ravine and was never seen again. However, it is said that his spirit still roams free.