Yes! The Mysteriography! Splendid word :-D
I went to try and get some more pics of the horse at the weekend, but Philips' dreaded mists thwarted me! I did manage to (just) get some in 2003 though... I spoke to an old guy in Sedbergh last year who told me a few interesting things about the Black Horse of Busha(w).
Maybe I'll go resurrect that old thread... if I can find it...