This is shown in much of the rock art here.
Some of the oldest rock art is over 10,000 years old.
They added to the rock art already on the walls, but in styles of their own.
The result becomes a rock hard fine art that will last for centuries.
Some of the oldest rock art was produced by them.
Rock art is a global phenomenon, being found in many different regions of the world.
They have left many examples of their rock art in the river valleys.
The rock art now attract thousands of visitors each year.
Ruins and rock art can be found throughout the Monument.
From this period there are extensive examples of rock art.
