|Illustrator||Carlos D'anda & Randy Elliott|
|Number in series||7|
|Previous comic||Comic 6: Into The Nest|
|Next Comic||Comic 8: The End Of The Toa?|
What Lurks Below was the sixth BIONICLE comic of the original BIONICLE comic series and the fourth part of "The Bohrok Saga" sub-series.
Five of the Toa Mata are trapped in a sealed tunnel with a wave of molten lava coming towards them. Tahu is trapped in a Bohrok nest with thousands of awakened Bohrok surrounding him. Kopaka freezes the lava for the moment while Pohatu and Onua struggle to destroy a seemingly unbreakable wall. Lewa then realizes that the wall is nothing but an illusion that the Toa can pass through if they stop believing in it. The Toa escape but notice that the ground is getting hot. Suddenly, Tahu burst out of the ground and reveals that he used his sword to heat the air until the nest blew apart. Shortly after, the floor fell apart revealing a hidden chamber. The Toa find strange niches and place the Krana in them. Suddenly 6 doorways open. Each of the Toa go in and discover an Exo-Toa. They then activate the machines.
By now, the Toa have engaged the Bahrag in battle. They forced them into the center of the chamber, which turned out to be a fatal mistake. Bringing the Bahrag together increases their power, making them immune to the Exo-Toa's blast. The Toa are now faced with a challenging battle with the queens of the Bohrok.