This should concern us more than it does. Thoughts?

The Babylonians recorded an event of an entire library being buried before the Great Flood. In the third century BCE, a Babylonian priest named Berossus wrote an account of his civilization's history. His original work is lost, but portions survive through later historians. According to Berossus, a god identified in the Greek account as Cronus, associated with the Mesopotamian Ea or Enki, appeared to a man named Xisuthrus in a dream. He warned him that a catastrophic flood was coming and that humanity would be destroyed. Xisuthrus was ordered to gather the written records of his civilization, including its history from the beginning, and bury them securely at Sippar, the ancient city associated with the sun god Shamash. Before the destruction of humanity, the preservation of knowledge was specifically ordered. The Flood eventually came and Xisuthrus survived. After leaving the vessel, he disappeared and was said to have joined the gods. The remaining survivors then heard a voice instructing them to return to Babylonia, excavate the buried writings, and restore that knowledge to humanity. According to the text, they did exactly that. They recovered the tablets, rebuilt cities, erected temples, and reestablished Babylonian civilization. I've studied quite a few ancient flood traditions, but this particular detail pops out. The objective was to preserve a civilization's accumulated knowledge so that society could be reconstructed after its destruction. Remember, the better known Atrahasis flood narrative doesn't contain this buried archive episode. We have no archaeological evidence confirming that this particular collection was buried and recovered. Berossus was also writing way after the period his story describes. But I find the underlying account cool as all hell. The Babylonians preserved a tradition in which a god like being knew a flood was coming, identified what humanity needed to preserve, selected a location to protect it, and arranged for its recovery after the destruction. Very deliberate sequence of events isn't it? It gets me wondering what knowledge did the Babylonians believe existed before the Flood? Why was it important enough for the gods themselves to order its safety and renewal?