Elevator brought me to the sandy caves filled with water. Sand is shivering under my feet and filled with creatures, most of them are easier to avoid than to kill. Quicksand represent the greatest danger here... ...Found a pneumatic tube which leads down, a very far down. Bottom caves are filled with quicksand too, and sand falls from the ceiling... ...Found a very strange creature. X-ray scan shows that the wall in this area is unsustainable to some energy influence, and there are holes far behind it with a strange energy signature. I destroyed it with the energy bomb, only to find the impassable sandy bedrock behind. And after that the creature start to drill the sand... Follow the passage left by the creature I found in the maze of cavities a Chozo holding a valuable device, but nothing more...