Missed the beer bath though!
Sorry to hear that, Rob. Next time perhaps?
Near Myvatn there were underground natural hot springs under the old lava flow where you could soak your tired muscles - one for chaps, one for lasses and one mixed. I hear the water temp has become a bit too high for comfort since - I hope that's not true. They now have well organised "Nature Baths" - nice no doubt but it's not so primal!