The Cravens Unit Track Recording Train was out on the eastern end of the
Central Line on the 3rd May 2005. It is seen here going through Roding Valley,
having just left the main line to Epping, heading for Chigwell and the depot
at Hainault.
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Photo from James & Martin's Picture Collection Copyright 'Jampics' m.hawkes7@ntlworld.com 
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British and Foreign Railway Pictures <A HREF="http://jampics.fotopic.net/"> Jampics Fotopic.</a>