Editing Darling Scarp (section)

=== Railways ===
The building and developing of rail access across the scarp developed three separate main routes over eighty years.<ref>Higham, G.J.(1968) ''Over the range:railways across the Darling range of Western Australia:Midland to Northam and York'' Bassendean, [[Rail Heritage WA|W.A. Australian Railway Historical Society, W.A. Division]]</ref>

* The [[Eastern Railway (Western Australia)|Eastern Railway]] first traversed the Darling Scarp in the 1880s along its ''first route'' through Greenmount (where three of the above quarries  were later able to use the railway).
* By the 1890s, the ''second route'' passed through [[Swan View Tunnel]] and [[John Forrest National Park]].
* In the 1960s, the ''third route'' used easier grades through the [[Avon River (Western Australia)|Avon Valley]]
* The [[Kalamunda Zig Zag]] or [[Upper Darling Range railway]] ran up the southern steep side of the Helena Valley entrance until 1949.
* The [[Millars Karri and Jarrah Forests Limited|Millars]] timber lines operating south to Yarloop, north through Jarrahdale up to Jarrahglen east of Byford and the Chandler mill.