Osson,
Twas written by G J Whyte Melville and is called 'The Place Where the Old Horse Died'. I have various copies of the lyrics but try the index now you've got the title. It might give Mick's version. Otherwise I'll do you a copy for next Sunday at the Beck. Let me know if you don't get it by Googling or from the index, but I bet it's online somewhere.
Steve