Although the Twenty Mule Teams, prospectors with their burros, and lost pioneers represent the extent of human history in Death Valley to most people, it actually started long before and continues today. Native people have been here since at least the end of the last Ice Age. Towns and mining camps have come and gone. Mining companies have moved from harvesting the mineral wealth to developing the valley for tourism. Most recently, Death Valley has become a cherished National Park, visited by humans from around the globe.