I'm 90% sure I remember watching a documentary from 10+ years ago about a French egyptologist postulating the same mechanism and finding evidence for these ramp

I'm 90% sure I remember watching a documentary from 10+ years ago about a French egyptologist postulating the same mechanism and finding evidence for these ramps on site. I remember specifically how it solved a major puzzle pertaining to the transportation of such heavy blocks within the upper levels of the pyramid as it was being constructed.