Wall alpine is a very light belay device from the Mammut, which can belay one or two second climbers. The optimized geometry guarantees comfortable belaying and blocking in the event of a second climber falling. The design allows simultaneous belaying of two second climbers with an automatic blocking function. The bucket has a massive eye used to hang it in the stand for securing the second climber(s). For this functionality, it is necessary to use one more screw carabiner. Easy lowering of the second climber thanks to the 4th hole in the belay body. A key lock carabiner fits ideally into it, or a thin flat dyneema loop or a round loop can be threaded through this opening.