The performance and security in outdoor climbing sports can dependon anxieties. These appear in frightening situations where, e.g. adeep fall is risked. Deep falls can lead to serious injuries or even tofatal accidents. Such situations can be trained in order to be mentallyresistant to them and thereby to make climbing safer. However,drawbacks have to be taken into account. The trainee has to bringhimself in a possible hazardous situation and nature is not directlyreachable for every person. Thus, we present a system, where a usercan climb at low heights in reality and simultaneously on a highcliff inVR. In this contribution, we describe the system architectureand future possibilities to safely train stressful outdoor climbingsituations indoors.