The ruined Egg Corridor.
It's the first time you grasp the true horror of Doctor's plans. Ruins, Horrified music, shattered eggs, ZOMBIE DRAGONS CRYING BLOOD.
But the best thing is the end. You enter the egg room and see the last egg missing, with the computer reporting a hatch. Kazuma emerges from the shadows, hopeless and desperate. He makes you aware of how much things suck, and give you one last chance to give up, one last chance to escape...
One last chance to betray the girl you promised to leave the island with way back in that very same room...
All while one of the most subtlely beautiful tracks plays.