3D Scans Reveal Ancient Art in Secret Alabama Cave
[html]Many of the etchings resemble human beings, which researchers infer are depictions of underworld spirits.[/html]
Source: 3D Scans Reveal Ancient Art in Secret Alabama Cave (http://ht**://www.discovermagazine.c**/the-sciences/3d-scans-reveal-ancient-art-in-secret-alabama-cave)