Heady stuff!

Island life does provide one or two idle moments,  

which I often fill with swotting up on our origins and history.

As we all know, mysteries abound and none more fascinating than

those surrounding the Sphinx and the controversies 

as to its actual age,purpose and original character. 

This site gave an interesting insight into the latter question.

http://www.freemaninstitute.com/sphinx.htm

The author viewed the Sphinx in the 18th Century when it's face was intact. 
He states that the features were Negroid.
Equally enigmatic are the huge stone sculptures of heads 
attributed to the Omtecs of Mexico, a race that 
disappeared thousands of years ago. 

Again their age, purpose and character puzzles historians.

Putting the two together I came up with 
an interesting picture (top) which may, 
or may not, invite further conjecture.
The rectangular section on the Sphinx is taken from this Olmec statue.