This is a world-famous cave park in Australia, which is said to have been around for a billion years, and the fossils of many primitive animals have been found in the cave, which is very mysterious. And the area of the cave is super large, and the cave is said to be several kilometers long. Outside the cave there is a museum showing some fossils of animals excavated from the cave, and the appearance of animals after recovery, which feels like alien creatures, very sci-fi.