Maybe it’s this Berberis: Berberis julianae. The leaves look right.

Well, thank god for small favors, that we can rely on distribution data rather than genital inspection of butterflies that most likely would object to that loss of privacy.

Thank you! I think GL might be off just a bit though, based on range. The Eastern Bath White doesn’t look like it occurs west of Italy and Corsica, but the Bath White (Pontia daplidice) does. It’s an easy mistake, so we shouldn’t fault GL too severely. According to Wikipedia, the two species are nearly identical, and can only be distinguished by examining the genitals. I’m not sure the genitals are very clearly shown in my photo.

Oh, we are too! That was the best part - so much fun I went out and did it again today. Type 2 fun, squared!

I heartily agree, but I think there would be quite the crowd if that were possible.

Puts me in mind of ocotillo...

Barberry seems to fit the thorns, and in a (very) few photos there are also prickly looking leaves, but most are rounded...

https://www.inaturalist.org/taxa/75758-Berberis-vulgaris/browse_photos

I feel dissatisfied that nobody has perfected the technology that would have beamed us there to join you for a cold drink and a gaze over paradise. Next time.

Boy. This is probably some kind of barberry but not one you want to plant in your yard unless you hate all of the animal kingdom and children too.

Pontia edusa, the eastern Bath white. I didn't know this of course, but Google Lens did.

What a stunning place! Beautiful photos. I'm glad you pushed your bikes up over all those stones and stairs.

Can't argue with that designation. Your photos are very beautiful.

Actually, the town itself is beautiful but being here on a long weekend is a bad time. It’s very crowded and hard to find a restaurant. Also the walk we took from here was very disappointing. Today I’m going the other direction toward Gea de Albarracin where the colorful rock is. Hopefully that will be better hiking. The most colorful area is on the busy road into Albarracin.

😬 Beautiful in a picture. Brutal in real life!
Built long before there was widespread application of “the wheel”

What an ordeal getting to your room! If we ever follow your route, I know where not to sleep. I'm sure Albarracin is going to be worth the effort,though.