Mountain climbing is risky and requires a lot of safety precautions, it could be fatal as well as being an interesting adventure both as sport and as recreational activity. As a recreation, you must not go beyond your capacity, as sports, that's a professional level and mountaineers must meet some criterion to be eligible for a contest.
In the image, the two female mountaineers seems to be tired and needed a nap, they had a mountain makeshift bed fixed by the cliff, but would you agree to resolve to that no matter how tired and exhausted you are?
It looks safe but there unforseen situations like high wind speed and heavy rain storm that needed to be taken into consideration. What about Bird attack? Eagles and other Birds of preys make their nest in the cleft of rocks and mountains and they have been documented to attack humans viciously even on ground not to talk of high up there.
Tremors and earthquakes are another factors, these things don't announce sometimes no matter the seismic readings. Tremor will vibrate and make every fixed gears fall off their hooks and a fall from that great height is an inevitable demise of the careless victims. There are countless other things that could go wrong in this scenario which makes this caption as interesting as it is not safe an inch.
I am an engineer by profession and safety precautions is one of the trainings I have gone through in my training years and that made me put a few of my thought unto the Blockchain.