Put in the Spirit's Eye! (タマシイの目を入れろ！, Tamashii no Me o Irero!, lit. Insert the Spirit's Eye!) is an event in Tomba! 2: The Evil Swine Return.
Reveal the ghost guardian who is blocking the path.
This will trigger a short cutscene and the event is activated. Now you must defeat the two other ghosts in the area in order to clear the event.