article_snippet.sent: But both ends of the tunnel - at Blaencwm in the Rhondda and Blaengwynfi in the Afan Valley - were filled in during the 1970s.
article_snippet.sent: the abandoned Rhondda Tunnel runs from Blaencwm in the Rhondda Valley to Blaengwynfi in the Afan Valley (shown in map)
article_snippet.sent: How the abandoned Rhondda Tunnel's length will compare to those around the world, according to the Rhonda Tunnel Society .
article_snippet.sent: But the Rhonda Tunnel Society formed a few years ago in a bid to secure funding for Rhondda Tunnel's excavation.
article_snippet.sent: Workers at the Rhonnda  Tunnel .
article_snippet.sent: the Rhonda Tunnel Society .
article_snippet.sent: Rhondda Tunnel Society chairman Stephen Mackey said: 'The engineers will be walking the length of the abandoned Rhondda Tunnel across three days looking at the safety of the structure to see what it's like after 47 years and to see if it is possible to re-open the tunnel. '
article_snippet.sent: Rhondda Tunnel Society chairman Stephen Mackey added: 'With the interest of the world looking in on the project, the inspections next week are going to be crucial with engineers being in the dark depths of the tunnel evaluating The Highways Agency Historic Railways Estate integrity. '
article_snippet.sent: Then us will have the wait for the report and the subsequent findings.' to re-open the tunnel was built by the demands of the coal industry to run from pit villages Blaencwm in the Rhondda Valley under the mountains to Blaengwynfi in the Rhondda Valley .
article_snippet.sent: The plaque at the Blaencwm entrance of to re-open the tunnel.
article_snippet.sent: The plaque at the Blaencwm entrance of the tunnel is being inspected next week for the first time since The plaque at the Blaencwm entrance of the tunnel closed .