What makes you sigh "Nature is really amazing"?

The most magical creation of nature should belong to caves, which make people completely immersed in the space of science fiction.

The first time I felt the cave was when I traveled to Zhaoqing. I thought the cave was a place full of strange stones, but I didn't expect it to be so fantastic. The interior of the cave basically maintains the characteristics of dripping stones, and a large number of light projections are added without changing the overall effect, making the cave look like it is surrounded by colorful colors.

What makes me sigh is that caves can be so sci-fi, and there seems to be a small planet in a small space.