Watched a documentary on forest firefighters, and how some were trapped when the weather changed, losing their lives. I started thinking about a refuge chamber that could be dropped by a helicopter or sky crane onto any terrain (typically a hillside). The chamber would be cylindrical, allowing it to orient on any incline, and it would have an outrigger that would prevent it from rolling down the hillside. It would be insulated so that the internal temperature would remain livable despite the external temperature. There would be a hatch for the firefighters to enter through. It should allow enough room for a twelve person team, or six people sitting across from each other.

Other options that could be added would be gel cell type power, an oxygen rebreather, air filtering, low power lighting, cooling (peltier?), location beacon, first aid needs.