Yes, rock also better because the drill was through hard rock.

And your daughter is correct, the 'l'e....' is often seen in French but not normally used in Spanish.

I wonder if your daughter could tell us how the country got its name-

'Fenix'- 'f' is the simplified spelling used in all Spanish-speaking countries for the Greek 'ph' words. English would be easier if we had similar conventions.

There is talk of putting a museum at the site to preserve the objects- and the memories.