Mammoth Cave is a very spectacular limestone cave in Perth. The cave is very large with many halls and underground rivers. On the top of the cave, there are many exquisite stalactites hanging upside down. They look like animals, some people, and some buildings. They are very beautiful and definitely worth exploring. .
Mammoth Cave is a natural karst cave. The cave is full of stalactites of various shapes, which is very mysterious. There are also several underground rivers in the cave. Many cave creatures live in the rivers. They are very strange and worthy of everyone's exploration.