Nordic Bronze Age objects. These valuable metals were all imported, primarily from Central Europe, but they were often crafted locally and the craftsmanship and metallurgy of the Nordic Bronze Age was of a high standard. The archaeological legacy also comprise locally of crafted wool and wooden objects and there are many tumuli and rock carving sites from this period, but no written language existed in the Nordic countries during the Bronze Age. The rock carvings have been dated through comparison with depicted artifacts, for example bronze axes and swords. There are also numerous Nordic Stone Age rock carvings, those of northern Scandinavia mostly
Prehistoric art National Park reserve. The earliest Indian paintings were the rock paintings of prehistoric times, the petroglyphs as found in places like the Rock Shelters of Bhimbetka, and some of them are older than 5500 BC. The Indus Valley civilization produced fine small cylinder seals and sculptures, and may have been literate, but after its collapse there are relatively few artistic remains until the literate period, probably as perishable materials were used. Prehistoric artwork such as painted pottery in Neolithic China can be traced back to the Yangshao culture and Longshan culture of the Yellow River valley. During China's Bronze Age,