Known locally as Tynal Tywyll - Dark Tunnel, in English - it now forms part of a north Wales coast to Snowdonia path. It's made ... of the five, Abernant Tunnel between Merthyr Tydfil and Aberdare.

Merthyr Tydfil County Borough Council is seeking a design team for the transformation of Abernant Tunnel into a new active travel route [Deadline: 24 June 2024] The winning team selected for the ...