RE: How do you keep a tent warm at 11,000 ft ?
You will kick yourself for not getting a thermarest sooner. Not only does it keep you warmer, but you won't wake up with a stiff back. Also, I don't like to sleep in long johns (rubs my hair the wrong way)! But I do keep them and my first layer of clothes in my sleeping bag with me. That way when I wake up, I am putting on warm clothes. The only problem then, is your boots. Nothing quite like putting on cold boots. The best advice I can tell you there is to waterproof them as much as possible on the outside (snowseal). If they are wet, even just on the outside,it takes a lotlonger to warm them up.