Thousands of ancient cave paintings were found by archaeologists in Mexico recently.
The 4,926 paintings were found in the caves Sierra de San Carlos in the state of Tamaulipas in northeastern Mexico.
BBC said that the paintings cover 11 different sites with one cave containing 1,550 pieces of the primitive art.
Though likely ancient, it is still unclear when they were painted.
Archaeologists said that the paintings depicted early hunter-gatherer communities likely in pre-Hispanic times.
There are also signs of astronomy and religion in the artwork but the cultural aspects of the pieces still need interpretation.
It is believed that the paintings were made by three separate nomadic groups that have no record in history.
Researchers say the painters used yellow, white, black and red dyes to achieve the work but further study needs to be done as to where the color came from.
There were no objects linked to the peoples who made the paintings found nearby.
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