According to the plot of my story, on the territory of one of the ridges of the trans Antarctic mountains, a monument was built of unprecedented scale in comparison with the previous ones. Possibly the last and most enduring mention of us. Which, in which case, like the tombs of ancient civilizations, which they so characterized, will outlive us ... keeping all the knowledge of human civilization, to those who will live after us. Millions and millions of years later.
Most of the complex is underground, while on the surface there is a domed elevation, hollow inside, and is the entrance to the main complex.
And here we come to the essence of my question: from what should we build this complex and what form should it be in order for it to stand as long as possible?
So the granite, which is familiar for durable buildings, will not suit us, because the rate of granite erosion is approximately two centimeters every ten thousand years, because of this, for example, the world famous Rushmore Mountains, with the faces of American presidents carved on them, will completely cease to exist within the next 7,2 million years (which is too little for us), therefore we need something better.
Note: The most important wear factors will be friction (remember that wind speeds in Antarctica can reach several hundred kilometers per hour) and temperature drops.