Uploader's Comments

The upper part shows Christ on the cross. The lower part of the image shows two people, one on either side of the cross. This is a very traditional depiction, the figures represent Mary and St John. This particular style began to appear in the later 8th century.
This carving may have been added much later than the original design. The use of the pointed arch, as shown above the crucifix, began in the British Isles towards the end of the 12th century.