I couldn't believe my own eyes, all those insects and orangutans, crazy wild life. It's not all fantastic as the industrialization and de-foresting has been destroying natural habitats for decades now. But you can still experience nature in many places, like National Parks or a sanctuary of course.
I thought I saw caves before. I really didn't. Not until Borneo. Indescribable space, a microcosmos of living things. Some of them even served as dwellings for humanoids. They inspire awe, and a bit of fear in me personally.