I saw a movie in the 1970's and I can't remember the title. It was a story about a boy and a horse that was lame or injured and the boy had to take this horse up to some sacred mountain to get this horse's leg in this stream so he would be healed. I think it was a Native American legend or something. The horse limped all the way up that mountain and they surpassed many obstacles along the way and he was healed. Can you help??

This one has been asked three other times on this site in the past and I have never been able to track anything down on it! The details have been pretty specific but my Google-fu has proved worthless.