Extreme sport (also called action sport and adventure sport) is a media term for certain activities perceived as having a high level of inherent danger. These activities often involve speed, height, high level of physical exertion, highly specialized gear or spectacular stunts.
At present date, there are no careful studies or statistics of deaths to separate activities with low or normal level of danger from those with high level of danger. It is instead used as a marketing term in promoting events such as the X Games.
The Eisbach (German for "ice brook") is a small man-made river in Munich. It flows through the Englischer Garten and is a tributary of the Isar River.
Eisbach surfer Just past a bridge near the Haus der Kunst art museum the river forms a standing wave about 1 metre high which is a popular river surfing spot. The water is cold and shallow, making it suitable only for experienced surfers. Being a standing wave it can be surfed for as long as one's balance holds, and in busy times a queue of surfers forms on the bank. In the past surfers tied a leash to the bridge to hold onto, but a sign announces that this is both dangerous and forbidden.
The local surfers have forced the wave to break more cleanly, with increased height, by attaching ropes to the bridge which trail submerged planks, creating two large "U"-shapes.
