This movie is about the Blue Mountain quarry where narrow gauge locomotives work hard thomas meets a locomotive with a secret: he has a locomotive in the .\r<br>\r<br>Learn about the Blue Mountain Quarry and the mysterious engines who work there with Thomas & Friends! Find more sing alongs with your favorite engine .\r<br>\r<br>\r<br>\r<br>At the Blue Mountain Quarry there is a lot of work to do! So all the engines work together to get everything done and make sure they are really useful! Sing along .\r<br>\r<br>The US trailer for the 2012 Thomas & Friends special Blue Mountain Mystery. Narrated by Keith Wickham Voices: Martin T. Sherman as Thomas and Percy .
