Here is integrally reported a long FB photographic thread started by Ángel L. Mayoral Castillo on June 2011. It is completely devoted to footprints; no matter about their chronological or geographical origin. You may intend it as a little bit casual, or, better, serendipitous, like some (few? many?) FB posts. Anyway it seems useful to share it, to get some starting points: an intriguing subject, surely not a secondary one concerning some aspects of rock art interpretation.
by FB thread (A.L.M.C.)