In 2015 Severn Beach station is the end of a branch line from Bristol. Trains use the old bay platform on the left but the track on the right (seen here) used to continue to Pilning where it joined the South Wales line and offered opportunity for a circular service back to Bristol. When this line was closed the track was retained for several years as a siding but now just the rotting sleepers remain.
<a href="//commons.wikimedia.org/wiki/User:Geof_Sheppard" title="User:Geof Sheppard">Geof Sheppard</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>