That night, I watched him rappel into the area near a molten volcano on the island of Hawaii.
Once at the rappel station, connect directly to one of the anchors.
A new study reveals that dragline silk, the stuff spiders use to rappel, has a molecular structure that makes it resilient to twisting.
Canyoneers say even a relatively easy rappel like this one can feel like drowning in midair.
The rescuers had to rappel from the roof down the side of the building to save the two men left hanging by their safety harness es.
