This is the trackbed of the Portishead rail line in North Somerset, at the point where it passes beneath the M5 motorway. Full funding has recently been approved for the re-instatement of this line, which was a victim of the Beeching closures in the 1960's. Trains should run again in 2-3 years from now. A big thanks go to the folks at the Portishead Railway Group who campaigned for this re-instatement for over 25 years.