From Gizmodo
Ice Age Artists Left 280 Engravings in This Spanish Cave. Visitors Walked Right Past Them
To be fair, the cave was really dark, and there was a good amount of tourist graffiti.
TechBlastTechnology. Unpacked.UK & world technologyTechBlastTechnology. Unpacked.UK & world technologyFrom Gizmodo
To be fair, the cave was really dark, and there was a good amount of tourist graffiti.