Before 1961 the route continued as the Bala and Ffestiniog Railway via Trawsfynydd to Bala, joining another former route along the Dee valley which ran southwest via Dolgellau to join the still extant coastal Cambrian Line south of Barmouth. The Pwllheli branch of the Cambrian Line splits from the Aberystwyth branch at Dovey Junction and continues northwards via stations at Aberdovey, Tywyn, Tonfanau, Llwyngwril, Fairbourne and Morfa Mawddach to Barmouth where it crosses the Mawddach estuary by the Grade II* listed wooden Barmouth Bridge, a structure which also provides for walkers and cyclists. Continuing northwards, further stations serve Llanaber, Tal-y-bont, Dyffryn Ardudwy, Llanbedr, Pensarn and Llandanwg before reaching Harlech. Tygwyn, Talsarnau and Llandecwyn stations are the last before the line exits the park as it crosses the Dwyryd estuary via Pont Briwet and turns westwards bound for Pwllheli via Penrhyndeudraeth, Porthmadog and Criccieth.
Before 1961 the route continued as the Bala and Ffestiniog Railway via Trawsfynydd to Bala, joining another former route along the Dee valley which ran southwest via Dolgellau to join the still extant coastal Cambrian Line south of Barmouth. The Pwllheli branch of the Cambrian Line splits from the Aberystwyth branch at Dovey Junction and continues northwards via stations at Aberdovey, Tywyn, Tonfanau, Llwyngwril, Fairbourne and Morfa Mawddach to Barmouth where it crosses the Mawddach estuary by the Grade II* listed wooden Barmouth Bridge, a structure which also provides for walkers and cyclists. Continuing northwards, further stations serve Llanaber, Tal-y-bont, Dyffryn Ardudwy Llanbedr, Pensarn and Llandanwg before reaching Harlech. Tygwyn, Talsarnau and Llandecwyn stations are the last before the line exits the park as it crosses the Dwyryd estuary via Pont Briwet and turns westwards bound for Pwllheli via Penrhyndeudraeth, Porthmadog and Criccieth.