Dolphins are a kind of aquatic mammals that widely live in various oceans,but this pattern has repeatedly appeared in the cultural relics unearthed at the Tillya Tepe in northern Afghanistan,which is deep in the inland,which is not in line with the common sense of biolo...MORE Dolphins are a kind of aquatic mammals that widely live in various oceans,but this pattern has repeatedly appeared in the cultural relics unearthed at the Tillya Tepe in northern Afghanistan,which is deep in the inland,which is not in line with the common sense of biology,so it is speculated that it is a cultural symbol ...