Ural pictograms
The Ural pictograms (Russian: уральские писаницы) are prehistoric pictograms in Ural dated to 3,000–2,000 years BC and located along the coasts of Tagil River, Neyva River, Rezh River, Yurozan River and some other sites. The color of the pictograms is different, varying from ochre, probably mixed up with blood, to lilac and brown, while the thickness is between 10 and 20 mm.