Abîme This is the act of using ropes, harnesses and ladders to descend an abîme. This is the most popular activity besides the actual exploration of caves. It is also the most dangerous activity to do in a cave. The biggest danger comes from using poor ropes and ladders for rappelling down shafts. Many amateurs make this mistake and it leads to the most cave deaths. An extreme sport and requiring a person to stand at the entrance of an abîme and jump into the opening while pulling a parachute before hitting the cave floor. This is highly dangerous and should
Sport stacking by completing the cycle in 7.43 seconds. The next year, the first WCSA World Championship took place at the Denver Coliseum and has since been held annually. The WCSA formally titled the sport "sport stacking" and changed their name to the World Sport Stacking Association (WSSA) in 2005. The WSSA cited the public recognition that stacking is considered a sport as the reason for the name change. Official sport stacking cups are specially designed to prevent sticking and to allow the competitor to go faster. The cups are reinforced with several ribs on the inside which separate the cups when