Cliffhanger-VR.

The performance and security in outdoor climbing sports can depend on anxieties. These appear in frightening situations where, e.g. a deep fall is risked. Deep falls can lead to serious injuries or even to fatal accidents. Such situations can be trained in order to be mentally resistant to them and thereby to make climbing safer. However, drawbacks have to be taken into account. The trainee has to bring himself in a possible hazardous situation and nature is not directly reachable for every person. Thus, we present a system, where a user can climb at low heights in reality and simultaneously on a high cliff in VR. In this contribution, we describe the system architecture and future possibilities to safely train stressful outdoor climbing situations indoors.