The Labyrinth Monster is a creature Lara encountered in Ireland. Only one has ever been seen and that was inside the Labyrinth, it chased Lara through the maze while she was being guided by bright moving lights.
Pans Labyrinth MONSTER by Mrwonkystick on DeviantArt
Pan's Labyrinth Monster by TheGlassCeiling on DeviantArt
Pan's Labyrinth Monster by Leeyaloo on deviantART