Grosmont is quite strange to start with, but even stranger since the modern day 'main line' is historically the branch line. Even stranger that the mile posts on the Esk Valley line remain constant with this (mileposts run from Pickering-Whitby, with a separate sequence of mileposts for Battersby-Grosmont).
http://www.docbrown.info/docspics/eskvalleyline/P9288797.jpg
http://www.docbrown.info/docspics/eskvalleyline/P9288797.jpg