The children thought the etching of a skier had become faded, so they scratched over it to make it easier to see.
CHR Comment: The article refers and links to the 2012 story of an attempt to restore a fresco, which resulted in the destruction of the fresco. Although churches benefit from owning valuable art, they also face the daunting challenge of maintaining it and protecting it.
Source: ‘Good intentions’: Treasured 5,000-year-old Norwegian rock carving destroyed by well-meaning kids – The Washington Post
These depictions of Jesus provide a pretty good overview. However, when the article asserts that Jesus was not depicted with a beard until the fourth century, I would question that conclusion. The fresco at Dura Europos (second image) might have included a beard on Jesus’ chin. The state of the image makes it difficult to tell. Other early depictions borrowed from existing Greco-Roman depictions of gods or heroes (think stock art), who typically did not have beards. So the evidence is not quite so helpful for determining how to depict Jesus.
Isaiah 50:6 speaks prophetically about Jesus’ suffering and describes Him as bearded. That prophecy may have helped settle early Christian depictions that became standard in later centuries. It would be interesting to research the history of interpretation for Isaiah 50. That Jesus was of Jewish descent is beyond dispute.
The Evolving Look of Jesus – Killing Jesus Gallery – National Geographic Channel.