You were close, so close. It’s in mainland Mexico, not Baja.
I took this picture just before New Year’s 2004 near Batopilas, which is a little tiny village at the very bottom of the Copper Canyon. It is one of the most spectacular places I have ever visited, following possibly the scariest bus ride of my life: 7 hours down dirt road switchbacks. The driver had an annoying habit of taking his hands off the wheel and praying every time he saw a shrine for those “departed down the cliff.”
The church is the Satevo mission built four centuries ago with a mysterious past.