Ymhellach i WQ100515, pa ystyriaeth y mae Llywodraeth Cymru wedi'i rhoi i ddynodi piler Traphont Walnut Tree yn Ffynnon Taf yn ased hanesyddol?
Wedi'i ateb gan Trefnydd, Prif Chwip a Gweinidog Cabinet dros Ddiwylliant a Chwaraeon | Wedi'i ateb ar 06/10/2026
The Walnut Tree Viaduct pillar was assessed for listing in January 2000 during a survey of potential listed buildings in Taff's Well, but it did not meet the published criteria for listing. It is therefore not a designated historic asset.