Oh OK I’m in an advice-giving mood.
First time I rode in France, it was mostly fine- for all you’re on a mountain, you’re surrounded by other ones, so you’re usually able to look across at another mountain rather than just across into the void as it often is in Scotland.
But, the one time we did go up to one of the higher summits locally, we did it by the gondola. And because I was freaking out a little, I spent the gondola ride looking at the ground directly in front, never looking around. TERRIBLE IDEA. Because when we got out at the top station, we were suddenly on top of the world, on a treeless ski-resort peak with nothing between me and the valley below. Basically exploded my brain, I couldn’t look up at all. Riding the bike while looking down at the ground was… challenging.
So, don’t do that. Acclimatise.