66548 passes Souldern Wharf on 21 April 2015 with the 6V16 11:24 Stud Farm to Hinksey ballast. This view clearly shows the difference in levels between the Oxford line, and the Chiltern line, approximately a mile south of where the lines diverge, at Aynho Junction. Souldern No.2 Viaduct, just visible in the background above the blackthorn blossom, is on the Chiltern route.