sentences:  At the time, the tunnel was still unlined and a watchman was employed to inspect the tunnel for any rockfalls, until it was eventually lined with brick some years later.By the time the tunnel was finished, having taken four years to build and a further three to complete the railway approaches to it, the project had crippled the finances of the Carmarthen to Cardigan Railway, which soon went into receivership.After the railway was closed to freight traffic on 28 September 1973, the track was removed.