Scientists love to mess with eldritch gods. Egyptologist Howard Carter did it to the Kemite gods. Archaeologist Guiseppe Fiorelli did it to the Hellenic gods. Parapsychologists Egon Spengler, Peter Venkmen, Raymond Stanz and their associate Winston Zeddmore raised the ire of the Sumerian god Gozer.
In most cases leading an expedition into an obscure or revered site is done in the name of archaeology (pillage, pillage, loot, loot). After all, the religious artifacts are going to a museum, just like animals captured in the wild may be taken to zoos.