Among the archaeological riches in Kilmartin Glen is an extraordinary array of prehistoric rock art. It is clear that the potential date range is very long, from around 3500 to around 1000 BC. The Kilmartin Glen rock art, including that at Achnabreck, is likely to be around 5,000 years old.
Graffiti / street art , Urban art .. lets just call it ART.. https://www.etsy.com/shop/urbanNYCdesigns?ref=hdr_shop_menu - I really like this piece of art because it has a lot of meaning behind it. It shows a blank wall that is being torn apart and behind