The abandoned Rail Line starts 8 km from Bungendore and ends 1 km from the centre of Captains Flat. The distance of the line is 32 km. There will be links at both ends creating safe access to Bungendore and Captains Flat.  The total distance of the trail will be 42km.

The rail line was constructed in 1939 and used to transport ore from the mines around Captains Flat and was closed to rail traffic in 1968 after mining ceased in 1962. There is no expectation that it will be reopened as a railway.

Although the line only operated from 1940 to 1968, it was used briefly during the making of the 1970 Ned Kelly movie starring Mick Jagger. 

The picturesque route begins 8km from the village of Bungendore, runs across the farmland plains of Lake George, along the Molonglo Valley and across the Molonglo River on the impressive Foxlow Bridge. It passes through native forests in the rugged Tallaganda region and climbs just 150m overall to arrive at the old rail head 1km from Captains Flat. The rail line passes a variety of railway heritage items.