Masaya is an active volcano in Nicaragua.
It spews out sulpher dioxide in huge billowing clouds. That combines with the rain to make "acid rain."
No doubt about this acid rain being nasty stuff. It's choking to even try and breath through.
But it makes for some pretty amazing sights.
The rain clouds fly up over the lip of the volcano and smack right into the sulpher cloud. In a cataclysmic white-out that engulfs everything in its wake. It cuts visibility down to almost zero. And burns your mouth and throat. Probably messes up the paint job on the cars parked anywhere near it, too.
I don't think the cross is helping keep this devil "acid rain" at bay. I'm sure I heard Mother Nature having a good giggle over the whole thing.