A good fire reflector maximizes heat retention and minimizes fire wood usage. Also may deflect wind while sleeping. Kudos to the builder. I have a couple of references to fire reflectors in my novel "Obliterated-Would You Know How to Survive?"
When the Family found a good spot to camp, there would be many things to do before settling down for the night : The children would be sent to gather up firewood, this would be used for the Yog, a fire central to the camp for cooking and sitting by to keep warm, but not only that a place tr to sit and chat after filling their bellies, talk about their day and sometimes they would play a fiddle and sing and dance.