According to Daily Mail, cave paintings date back at least 44,000 years, making them one of the earliest known forms of storytelling and culture on the human body.
But how our primitive ancestors created colorful, detailed scenes on cave walls in darkness, without artificial light or even vision is always a big question mark.
"We are really interested in all the processes behind these images," Diego Garate, a researcher at the University of Cantabria in Spain, told CNN. They can create drawings right at the cave entrance without any problems. But they have done it in very deep and narrow places inside the caves.
Researcher Garate said that coal ruins at art sites on stone can tell us a lot about the way artists work, but these relics are often overlooked and not studied in detail.
Based on archaeological evidence found in the caves of the antique stone period, researchers have created their own versions of the prehistoric thunder and fat lanterns. The team then examined how well they functioned inside Isuntza 1 Cave in the Basque region of Spain.
They created 5 wooden sparkling beams by combining dried maple wood, eucalyptus shells, spring venom plants, pine resin and mermaid from deer bones; 2 stone oil lamps filled with dried maple wood, plastic and the bone marrow of cows; and a small fireplace made of dried maple wood, oak wood and green maple tree shells.
They discovered the most active wooden sparkles to explore caves or cross a wider space as they glow in all directions - up to nearly 6m. payment rings are easier to transport and 5 times brighter than oil lamps.
The shortest spark lasted 21 minutes, the longest was 61 minutes. But they create a large amount of smoke and often need to wade back and forth to continue to glow.
A recent study from Tel Aviv University shows that artists of the antique period were deficient in oxygen because the space was too deep and narrow. In addition to the possibility of death, lack of oxygen can lead to feelings of excitement, hallucinations and a feeling of the body floating or flying.
Artists painting in such a state makes researchers speculate that paintings are a way to communicate with gods or other worlds.