The nave was added to the west with substantial masonry walls, pierced with octagonal windows on the north side.
There is no trace of the old open chapel arch however., only the ashlar frame of a small window cut into the wall below the plaque.
This fact, together with the large chapel attached to the south side of the sanctuary with its carved doorway and upper belfry, suggests that the main nave was abandoned in the 19th century, with the sanctuary and side chapel modified to serve as the entire church. This is not uncommon in Yucatan, for example at Tinum and Piste and may indicate population movement or decline following independence.
Opichen is unusual for the appearance of fine masonry work incorporated into what was otherwise a modest village mission. In addition to the elegant carved inscription, there is a Doric colonnade of unknown purpose running east from the south east corner of the church.
These however, appear out-of-place, haphazardly added to the older fabric of the mission. The presence of these carving may even indicate a previous location.
Parts of the church have been restored: re-pointed at the
corners with ashlar blocks which may have come from the nearby
Maya ruins at Oxkintok.
It is to be hoped that the ravages of time and neglect will be halted
before this curious monument falls into irreparable ruin.