Abseiling- extreme sport, and it’s really popular nowadays. It`s a controlled descent down from a height. Abseiling takes place all over the world, because you can use any high mountains, walls and skyscrapers.
the XX century, German climber Hans Johannes Emil Dülfer, first «abseiler», used only a rope to go down the mountain. He kept a rope in his hands like on the first picture. Later, other climbers used a rope and carbine like on the second picture.