Prehistoric art developed during three main periods - Paleolithic, Mesolithic, and Neolithic. During the Paleolithic period, humans were hunter-gatherers who drew and painted animals on cave walls between 15,000-13,000 BCE. Common subjects included bison, horses, and deer. In the Neolithic period, agriculture became widespread as humans domesticated plants and animals. Significant structures from this time include Stonehenge in England and massive Moai statues on Easter Island, Chile, though how the latter were transported remains unclear. Prehistoric art provides insights into early human life, culture, and beliefs.