Abseiling

Abseiling using extended belay device (without the use of auto block backup)
Basic rappelling setup using belay device clipped directly to the harness. This technique is no longer considered to follow the best practices

Abseiling (/ˈæbseɪl/ AB-sayl or /ˈɑːpzaɪl/ AHP-zyle; from German abseilen 'to rope down'), also known as rappelling (/ˈræpɛl/ RAP-pell or /rəˈpɛl/ rə-PELL; from French rappeler 'to recall, to pull through'), is the controlled descent of a steep slope, such as a rock face, by moving down a rope. When abseiling, the person descending controls their own movement down a static or fixed rope, in contrast to lowering off, in which the rope attached to the person descending is payed out by their belayer.