I got the worst sunburn of my life in 1983 at the Dead Sea!
I was sitting under a canopy and thought I was save from that merciless sun, but somehow it got under there and burnt my shins. I got severe blisters on them and for years there were visible scars.
Out of curiosity I just examined my shins now and since there are many more scars there now, courtesy of life, I cannot clearly identify those Dead Sea scars any longer.