>>1125136it's An Teallach, Scotland.
Lots of exposed spots on that mountain.
And most people climb it without gear. Here in the UK we refer to this as scrambling. It's considered a grade 3 scramble. Or where hillwalking meets climbing.
The climbing isn't very difficult but the consequences are almost certain death if you fuck up.
Several of the mountains/munros in Scotland are like this. and are traditionally completed without any gear.
People who wish to rock climb with gear usually take even more complex routes where ropes are a necessity- More difficult but less dangerous because obviously your are roped up.