“ Waaaaw?! It's pitch dark and I can't see a thing! ”
Too Dark to See! (暗くて見えない・・・, Kuraku te Mienai..., lit. It's So Dark, I Can't See Anything...) is an event in Tomba! 2: The Evil Swine Return. Tomba receives the half Wisdom spell upon completing this event.
Bring a light source to light up the dark room in the Water Temple.
When Tomba reaches the second section of the Water Temple, there is a blue door found there; enter it. Tomba and Zippo will find themselves in a pitch dark room, where a man can be heard. He tells them that 20 Snow Fireflies as "they are supposed to give off brilliant light".
In order to obtain 20 Snow Fireflies and bring them to the room, the Collect Snow Fireflies event must be cleared and you must also find the Light Cutting Box, which later becomes the Snow Firefly Box, to carry the Snow Fireflies around.
Once you have done that, head back to the room in the Water Temple and Tomba will use the Snow Firefly Box automatically to light up the room. As a reward for clearing the event, Tomba will learn the second part of the Wisdom Spell. The event is cleared.