In 2015, two Russian scientists announced that the Giza sphinx was 800,000 years old. It was Robert Schoch who followed along from #John_ Anothony_West in suggesting the Sphinx was at least 7000 years old.
Here Charles kos suggest it could be way older. If we think in terms of Geological timescales rather than weathering over mere thousands of years. Why not? Humans have been around for OVER ONE MILLION YEARS, so why not?
The erosion on the Sphinx was obviously belonging to the waters from the lakes so upon scanning just how long ago the water could have gone high enough to damage the Sphinx in the first place the two Russian scientists came across the fact that this would have happened at least 800,000 years ago.