3 ms·

How come we find it underground then?

• hnbad 4y ago
  Is this a sincere question? If so: "underground" was "above ground" (or sea floor in this case) at the time. Additional layers formed and became the new "ground". Tectonic shifts moved places up or down (or on top of eachother), canals were formed or drained, water evaporated or froze, and so on. What I think is a lot more weird is that archaeology works: i.e. you can dig in old European cities and find the remains of older cities underneath. The short answer is that stuff like dust, decaying plant matter, erosion from nearby mountains and debris from the buildings themselves can effectively create this new layer on top, but it still feels counter-intuitive because we're not used to thinking in these timeframes: https://www.straightdope.com/21341986/how-come-archaeological-ruins-are-always-underground https://www.straightdope.com/21341986/how-come-archaeologica...
• t-3 4y ago
  Geography and sea levels have changed over the course of Earth's history. Perhaps you've heard of things like Pangaea, or found fossils while digging in the dirt as a child? Many areas now inhabited were below oceans at points in the past billions of years.