The parish church of Ezkio dates back to the 14th century. It has a Gothic entry door and consists of three naves with semicircular arches.
This parish church houses an early 16th century altarpiece. This altarpiece consists of a seat, three bodies, three columns and dust collector. The altarpiece has been mounted on a high plinth.
The monstrance occupies the central part of the seat. To both the sides there are two relief's of the Passion: the Flagellation and the Way of the Cross.
The first body has in the centre, the image of San Miguel, patron saint of the parish church. On the sides there are relief's referring to Archangel depicting the emergence on Mount Gargano and the Archangel in the fight with Satan.
In the second body, the image in the centre is taken by the Virgin, crowned and surrounded by angels, and also the Annunciation and the Adoration of the Shepherds.
In the third body, the Calvary occupies the centre, and the relief's are on the Resurrection of the Lord and the Holy Burial.
There is no documentation on this work, nor Ezkio is mentioned in any literature on Gipuzkoa art.
A comparative study with other Gipuzkoan altarpieces has not shred any light about the master who built the altarpiece.