A lost civilization

So guys, got some questions. Will there be an update on the status of Urtistan? Aside from Zilean will there be more champs introduced from Urtistan's past into the game or no? A lost civilization I am eager to learn about. Aside from contemporary excavations here and there by archaeologists, the apparent disappearance of this major city makes me want to dive into its past to learn more about it and where it was exactly at it's glory. Who or what destroyed Urtistan? What did the people of Urtistan look like? Were they at war with another city-state during it's downfall? What caused their downfall? Did magic have something to with their downfall? Did any of the older city states of runeterra have any historical dealings involving "trade" with the once great city of Urtistan? What was their culture and way of life like? Zilean studied time magic so I am assuming their society had a lot of involvement with magical energies. And how did their soldiers look like? What kind of armor did their soldiers wear? Was it similar to Shuriman soldiers?

How can I learn about a civilization that has disappeared from existence without any trace left behind?

I find it very odd that not a single manuscript or scripture is to be found in any of the libraries of the major city states across runeterra describing Urtistan's appearance. We have accounts of many ancient historical things such as aatrox but no urtistan? So did no one visit Urtistan in it's historical past? No one wrote an account of it? There were no travelers to Urtistan? No merchants, traders that wrote an account of it? Not a single library or archive on runeterra has any description of this magnificent technologically advanced city.

What gives?