Alluitz (also Asluze ) is a peak of Biscay, Basque Country (Spain), 1,034.3 metres high.

The main feature of the mountain is the 600m high cliff that forms the south face.

The north face, although steep and rough, offers a practical access for experienced climbers.

To the left of the col starts the climb to the Alluitz, bordering the cliff.

The Devil's Pass or Infenuko Zubia can be perfectly crossed, but it is scary due to the high cliffs on both sides.