Another case of being too young to remember it properly (thanks to Rhian Thompson and Xtina Lamb), and I was probably put off by the horse focus (I was never a horsey girl - girls bedroom walls that were covered in horse posters were a bit creepy). The Moon Stallion, written by Brian Hayles (who also wrote Dr Who episodes in the 60s and 70s and two all-too-tantalisingly titled horror plays for children - Hour Of The Werewolf and The Curse Of The Labyrinth - among other credits) is a cracker of a supernatural children's drama though that shoehorns in symbols, myths, rituals (look out for the dead toad bones) and legend. Diana, a blind Edwardian girl, discovers her calling when she travels with her professor father to the Uffington chalk white horse in Wiltshire. While he goes off on a wild goose chase for King Arthur's last battleground, she taps in telepathically to the mysterious moon stallion and Diana the moon goddess, is kidnapped by a horse warlock out to become the all-powerful Green King and provides an aptly 70s message about the dangers of the developing 20th century machine age and the power of nature and sacred places, all set around the full moon of the Celtic feast of Beltane. It fair gallops along at a (mystifying) mystical pace.