There are many fossils we have of life from tens of millions, and hundreds of millions of years ago. Humanity has covered effectively the entire planet with it

There are many fossils we have of life from tens of millions, and hundreds of millions of years ago. Humanity has covered effectively the entire planet with items, human bones, and structures that will fossilize and make it pretty clear that an intelligent species was present. The SURFACE of the Earth might not show it, but the fossil of the human femur with a knee replacement, or the plastic GI JOE that fossilized in mud, or the fossilized remains of any number of concrete structures around the world would clearly be visible with a little digging. Many continents will undergo subduction, others will be flooded, or covered in glaciers, but there will be some areas that endure without much disruption.