I looked all over for a date and got everything from “early 1800s” to “late 1800s” but nothing exact, so I had to make an educated guess. The first cameras practical enough to take such a photo were developed around 1840 and the excavations began in 1867.
Crazy that we’re closer to Asterix’s time than they were to when the Sphinx was built.
Yes, the Great Pyramids and the Sphinx have the aura of eternity.