37714 passes Llandevenny with the 6E21 08:20 Baglan Bay to Humber polypropylene empties on 3 September 1999. At this point the relief lines are on either side of the main lines, but note how the up relief can be seen curving in from the right under the bridge in the background. This has just crossed over the main lines via the Bishton Flyover, which can just be seen in the background. Prior to this both relief lines were on the south side of the main lines.