What language(s) did the earth speak 10,000 years ago. The concept is electrifying for will English or any other language written or spoken today even exist?

The monument would have to be a "Rosetta Stone(s)" quite obtrusive and large like a pyramid. It would have to be written in multiple present and ancient languages. It would would have to feature math formulas and illustrations etched foot deep into Titanium, carbon fiber, or a material that wouldn't degrade in 10,000 years. Then inside the monument would have to feature even more information. WOW!