Carnival has its origins in ancient pagan festivals celebrating the new year and rebirth of nature, such as the Roman Saturnalia. Early carnival celebrations involved peasants masking themselves and dancing around bonfires to ward off evil spirits and celebrate good harvests. The first known carnival celebration occurred in Egypt, where people of different social classes would mask themselves and gather in the streets to sing and dance. Later, the Romans adopted the festival to honor Momus, the god of fun and ridicule, at the beginning of spring. In Bolivia today, carnival is a highly anticipated festival where people organize into music and dance groups to parade and celebrate for several days.