Explore details about location Trem y Ddôl Werdd. Trem y Ddôl Werdd is a location situated within the Merthyr Tydfil alongside other areas such as Glebeland Street, Powell Street, Millfield. Additionally, some smaller parts of Trem y Ddôl Werdd include specific areas like Chester Close, Horeb Street, Waun Cottages adding to the diversity of its landscape.