Well done Caveman, you have my admiration and good wishes........We are going out in a few weeks and hope that the summer lettings haven't produced a shed load of DIY for us to do......We will be on the Costa Calida coast at Torri de la Horadada but far from drinking Gallons of water, it will be falling down water..........Good luck for your next fase Caveman. Look foreward to some photos.
I'm 71 now but if I were 25 years younger I would be doing the same thing. I take my hat off to you and wish you the best of luck.
I have seen the cave houses and find them most desirable.