where is the huge painting, sketching in the desert in USA?

Question

i talk abut some uninterapted marks spread on a huge area

Answer 1

what do you mean?

Answer 2

not sure if this is what you may be talking about ?:

Painted Desert, badlands on the northeastern bank of the Little Colorado River, NE Ariz., stretching c.200 mi (320 km) SE from the Grand Canyon; includes Petrified Forest National Park. Striking bands of color result from irregularly eroded layers of red and yellow sediment and bentonite cl

Answer 3

colorado

Answer 4

in colorado