That carved stone must have been under cover for a long time otherwise freeze-thaw would have taken out the details.
Good point SS, and I agree with W W that his death was more likely to be 'internal tribal strife' than sacrificial. Removing the arrow shaft and leaving Ötzi's possessions up on the mountain suggest whoever shot the arrow didn't want to be associated with the deed.
Always been fascinated by the tattoo markings on his body - they look a little like the hexagrams used in the I Ching, and it was mentioned in the prog that they correspond to Chinese acupuncture points. Interestingly, next week's second program in the series looks at Chinese mummies and what appear to be some bearing Caucasian characteristics.