What was movie in the 70's of a young boy surviving in the wilderness all winter long in a huge tree?

What was the name of that movie? The kid found a big tree, hollowed it out and slept inside. He made traps for hunting food and taught himself ways to survive all winter long in the forest. I don't remember how it ended...?? What was movie in the 70's of a young boy surviving in the wilderness all winter long in a huge tree?
Sounds like "My Side of the Mountain (1969)". After being told that the family summer trip has been canceled, Sam, a young boy, runs from home to the mountains where he will have to struggle against the forces of nature. He uses a huge hollowed-out tree as a shelter, by the way. It's based on the novel of the same name by Jean Craighead George. *** spoiler *** spoiler *** spoiler *** At the end of the movie, Sam returns to his family. In the book, Sam's family moves to the mountains with him. *** spoiler *** spoiler *** spoiler ***
I saw the movie, but can not remember what it is called. However, at the end, he goes homeWhat was movie in the 70's of a young boy surviving in the wilderness all winter long in a huge tree?
My Side of the Mountain.