As promised a couple of photo's for you. One of the Snorkel stove - as you can see it just bolts onto the inside of the barrel - and one of the barrel itself with stove installed with guard and chimney.
It takes about 1.5 / 2 hours to heat up. You then close down the stove until its just ticking over and it stays warm for hours !
Some might feel that an old whiskey barrel with warm water in it is scarcely a luxury, but in the middle of the countryside in Wales, looking out across the valley, as you relax at sunset, it must be close to heaven