Costa Rica is a true vacation paradise, offering practically everything a visitor would like, with such a diversity of natural resources and a very well developed eco-tourism. There are secluded white sand beaches with great surf and amazing scuba diving. There are active volcanoes and towering rain forests. Getting around is easy via rental car, plane, or public bus, and the warm and friendly people make travel relatively safe and fun. Most mountain ranges are volcanic, and some are quite accessible to visitors. In the province of Cartago, for example, you will find the Irazu volcano, which erupted in the early sixties. The Poas volcano has one of the largest active craters in the world. And, the Arenal volcano treats thousands of visitors each year to a constant stream of red, hot lava rocks tumbling down its slopes.