Did archeologists discover a sphinx found in the Colorado River of North America? No, that's not true: There is no evidence that this sphinx was discovered in the Colorado River. The Associated Press reported that archeologists found this sphinx in Aswan, Egypt, a city on the Nile River.
The claim appeared in a Facebook post (archived here) on July 4, 2021. It reads:
As the Colorado River sinks, guess what's being revealed.
The further they dig the blacker the planet becomes...
This is what the post looked like on Facebook at the time of writing:
(Source: Facebook screenshot taken on Thu Apr 7 14:40:11 2022 UTC)
The creator of this post does not cite any sources that affirm the claim that this sphinx was found in the Colorado River.
A reverse image search of the sphinx led Lead Stories to an AP article from September 16, 2018. The statue of a lion's body with a human head was found in the Egyptian city of Aswan, a southern city located near the Nile River.