Archaeologists digging in the sand dunes of Santa Barbara County, California discovered a 300-pound sphinx head. Notably, the artifact does not date back to ancient times but is only 95-years-old. The sphinx is actually a prop from pioneering filmmaker Cecile DeMille's 1923 movie The Ten Commandments. It was part of the so-called "Lost City of DeMille," a massive Egyptian set made for the movie. From the Guadalupe-Nipomo Dunes Center:
Legend has it that after filming, it was too expensive to move and too valuable to leave for rival filmmakers to poach—so DeMille had it buried.
In the 1980s, director Peter Brosnan and a group of young filmmakers set out to find the ruins. Over 30 years later, excavations began, and have since turned up a trove of historical artifacts including an entire sphinx broken into pieces. Everyday relics—prohibition liquor bottles, makeup, and tobacco tins—have also been found, shedding light on what life was like for the cast and crew in 1923.
There's also a recent documentary on the subject, titled "The Lost City of Cecil B. DeMille." (Hollywood Reporter)