Here’s an interesting presentation by Klaus Dona. Dona is an artefact researcher from Austria. Though initially involved in mainstream research, during the course of his work, he came across archaeological findings that were hard to explain and this led him to put together an exhibition of little known and under reported inexplicable objects.
The slide show here from a Project Camelot interview is very interesting as it shows that many of the objects have an extra layer that we can’t see, namely they light up under a blacklight, meaning that they were created with materials which emit UV light. This is extremely interesting as it implies that the creators of such works must have had a capacity to see in the UV spectrum or else why create pieces which shine in such wavelengths?
Birds and many insects see in the UV spectrum, so this ability is not unusual. It just that it is not particularly common to modern day humans. As most of these items come from a time period of approx 10,000 years ago, they shed a very different light (no pun intended!) on who might have been living on Earth at that time.
For more on Klaus Dona: