I am looking for an old TV cartoon probably from the second half of the 1990s.
The story is set in time of the British Industrial revolution. Story evolves around a black horse. I think there is a also a boy. The horse is sold and is forced to perform heavy labor.
I think the story integrated a classic theme - metaphorical transition from rural harmony to industrial nightmare. The image that stood out painted a nightmarish picture of the Black country, devilish industrial landscape through which this black horse is led. In the end the horse is rescued and united with the boy.