'Palmerston', with the gravity train, approaching Tan-y-Bwlch.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/55426027@N03">Peter Trimming</a> from Croydon, England
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/peter-trimming/10315485195/">Steam 150: '1863 and All That'</a>