This may not be CM map work, but maybe if it had existed in CM’s time!
My 17 yr. old son is a geography lover. It all began when he did quiet time each afternoon as a little guy while his baby sisters slept.
He took to his room the Leap Frog Explorer Quantim Leap Talking Globe. If he pointed to places with the “pen” it would name them. It would give facts as well. Over time he began doing the quizzes on the globe. He learned every country and many facts about them all without any direction from me. He would show me each day what he had learned. I guess that is narration, right?
We still have that globe 14 years later and everyone has benefited from it. Best $99 I ever spent! There is likely a newer and better version available today. I would recommend it. It was truly a gentle and interest based way of self-learning.