Centuries and millennia in mythology are sometimes awoken into witchlands: such is the case of the Minotaur's Labyrinth on the isle of Crete. Whether the labyrinth actually existed or not is irrelevant; millennia of mythology/storytelling provided so much residual psychic energy the myth came to a very real life.
Found on and below the isle of Crete, the Labyrinth is accessible only by those who boast large balls of yarn to use to find their way out again...all other seekers find nothing but frustration. The entrance to the Labyrinth changes constantly, and is never found in the same location twice. Indeed, the interior of the Labyrinth is highly morphic and never repeats itself.
In the Labyrinth fires are mysteriously snuffed out and one's sense of direction becomes hopelessly useless. One may wander for weeks, eventually starving to death.
Is there a Minotaur in this Labyrinth? Perhaps. Though it is never encountered, the sound of a great hulking bovine abomination roaming to and fro may be heard on and off, for hours at a stretch. But no Minotaur ever appears.
The Beast is Always Searching, Searching, Searching: Environmental Control 2 (sound; Flaws: Limited [Minotaur-roars, only]). (1pp.)
Fire is Forbidden: Environmental Control 6 (fire; Flaws: Limited [may only snuff fires out]). (3pp.)
This Labyrinth Goes on Forever: Enhanced Feats: Equipment 12 (the Labyrinth, itself; Feats: Variable Descriptor [any "Labyrinth Layout"]). (14pp.)
----/::This is a completed Labyrinth build.
Here there be dragons.