If you’re doing any camping this winter, you may be interested in this video by Far North Bushcraft & Survival. It addresses the problem of how to keep your camp warm all night without having to get up and tend the fire. The answer proposed to make a stand-up long fire with two braced
6″ 10″ x 4-foot logs and let it burn.
The video shows what the fire looks like after 6 hours and it looks like it has another hour left in it. Raising the logs helps with air flow and to heat radiation. Interesting idea.