This is a project I did some work on in Valcamonica, Italy at the Centro Camuno di Studi Preistorici.
Unfortunately I can no longer update the database (you'll notice it's not exactly cutting edge) as I don't have access to any of the source material any more.
Rock art is a term used for any human-made markings made on natural stone. They can be divided into:
* Petroglyphs - carvings into stone surfaces
* Pictographs - rock and cave paintings
The stone carvings of Val Camonica constitute one of the largest collections of prehistoric petroglyphs in the world. The collection was recognized by Unesco in 1979 and was Italy's first recognized World Heritage Site. Unesco has formally recognized more than 140,000 figures and symbols, but new discoveries have increased the number of catalogued incisions to between 200,000 and 300,000. The petroglyphs are spread on all surfaces of the valley, but concentrated in the areas of Darfo Boario Terme, Capo di Ponte, Nadro, Cimbergo and Paspardo.
For further information click here: http://www.ccsp.it