some bison paintings in the Cave of Altamira, Spain, which were made over a very long period between 35,000 ~ 15,000 BP. (3648X2432) : r/ArtefactPorn
Grotta di Altamira. Preistoria e arte rupestre | spain.info
Altamira | Cave in Spain, Prehistoric Art | Britannica
Spain's Altamira caves reopen for a day - BBC News
A Pearl of Prehistoric Spain in Danger of Disappearing: Can the 35,600-year-old Art of Altamira Cave be both Witnessed and Preserved? | Ancient Origins
Cave of Altamira and Paleolithic Cave Art of Northern Spain - UNESCO World Heritage Centre
Cave of Altamira - Wikipedia
Altamira - World History Encyclopedia
The Cave Of Altamira - a UNESCO site in Northern Spain - Finally Lost
The Cave of Altamira: Spain's Paleolithic Masterpieces | by Ancient Artefacts | Medium