These two events serve as the respective Opening and Closing Ceremonies during the San Fermin Festival. The Chupinazo is a 24 hour extravaganza, full of debauchery and a wild party scene. A simple internet image search will more than confirm this. The Probre de Mi is a much calmer scene, based around a candlelight ceremony and epic fireworks. While standing on opposite ends of the pendulum, each serves as a unique bookend to the 8 days in Pamplona.