Preview to: Three Rappel (Abseil) Setups for when You've Lost Your Rappel Device
You need to rappel (abseil), but you've dropped your rappel device down a climbing route. The full video provides three different rappel setups you can use in an emergency that don't require a device. There are pros and cons to each and so choosing the right one for the right circumstance may help reduce risk.
Follow this link to the full video and accompanying blog post.