02 Extra The rock carvings from Carschenna In 1965 Peter Brosi, a forestry official, discovered Bronze Age rock carvings above Sils in the Domleschg valley, near a place known as Carschenna.Photo: Archaeological Office Graubünden + A total of 11 carved smooth rock plates with several hundred symbols were brought to light. They are amongst the most significant rock carvings in the whole of Switzerland.Photo: Archaeological Office Graubünden + The rock plates show numerous concentric circles and bowl-shaped indentations. Their meaning remains a mystery until this day.Photo: Archaeological Office Graubünden + Other carvings show rays emanating from wheels, possibly symbolizing the sun, which may have had cultic significance. Different attempts at interpretation suggest the images may have had cartographic use.Photo: Archaeological Office Graubünden + There are also some figured representations, like this laden pack horse.Photo: Archaeological Office Graubünden +