Many different examples of prehistoric cave art have been found, suggesting the Cantabrian culture is at least 15,000 years old. Cave art is the best known feature of the Cantabrian life. The latest round of systematic cave explorations began in the early 1970s. Now new art can be discovered every year. Some of the cave art is engraved, and others are painted. Much of the cave art is of animals. There are often pictures of red deer found from this area of Spain. There are also other unusual symbols that can be found. This attracts much interest and many tourists to this culture. The Cantabrian life revolves mainly around art, tourism, and fishing. Rich deposits of coal, iron, and zinc are also mined in the Cantabrian Mountains. Tourism is a very large part of the Cantabrian life, and their economic success.