Editing Corris Railway (section)

=== Branch lines and tramways ===
The Corris Railway had numerous branch lines, mainly built to serve the slate quarries along its route. The principal branches were:

* The [[Llwyngwern quarry tramway]], at {{rws|Llwyngwern}}.
* The [[Era quarry tramway]] at {{rws|Esgairgeiliog}}.
* The [[Upper Corris Tramway]] from {{rws|Maespoeth Junction}} serving [[Braichgoch slate mine]] and quarries surrounding [[Corris Uchaf]].
* The [[Y Magnus|Matthew's Mill Siding]] near {{rws|Aberllefenni}} serving the slate enamelling works known at different times as Y Magnus and Matthew's mill.
* The [[Aberllefenni quarry tramway]] connecting the slate mill with three quarries.
* The [[Ratgoed Tramway]] north of {{rws|Aberllefenni}} serving [[Cymerau Quarry]] and [[Ratgoed Quarry]].

Only the Aberllefenni Quarry tramway may have been locomotive worked, and in the 1960s and 1970s a tractor was used to haul waggons along it. The rest of these branches were operated by gravity and horses.

Other temporary branches were built to aid forestry works from the [[First World War]] until the 1930s.