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Patterns formed by mycelium fungus on the inside of tree bark peeled away from a firewood round.
Newspaper Rock State Historic Monument, located in southeastern Utah close to the Needles District of Canyonlands National Park, has sandstone rock faces covered with petroglyphs drawn over 2,000 years ago by Anasazi, Pueblo and Archaic Native Americans.  The drawings consist of peoples, animals and symbols and were created in the desert varnish that builds up on the walls of the sandstone when iron and manganese from rainfall and bacteria are deposited.
Rock signs from the 3rd century before Christ in Navai.
Numbers template to be painted on a surface
texture and surface of wall
Hakkari, Rock paintings indicate that there were settlements here. They are very simple rock paintings made by migrant groups. Chronological examination show that these paintings were artistic creations of people who lived here 10,000 years ago.
Rusty metal background. Corrosive Rust on old iron.\nPanoramic grunge rusted metal texture, rust and oxidized metal background. Old metal iron panel. High quality picture. Copy space for text.
Newspaper Rock carved rock historical monument with a large collection of petroglyphs Utah USA
Newspaper rock is a protected wall with ancient Anasazi Indian petroglyphs
Yellow and purple painted concrete wall with black mildew stains all over
birds poop droppings on asphalt road
Natural ecology, stone, rust, texture, background, abstract, plain stone, rock, building material, shape, solid, marble, granite, sea stone, wall, floor, stone wall, color, nature, simplicity
Rock painting in caves Sablinskaya
Ancient petroglyph. Fremont Culture, Utah.
old stone wall texture close up
Rock paintings in a prehistoric cave in the Batuecas Valley, La Alberca, Salamanca
Bushman prehistoric rock engravings at the UNESCO World Heritage Center in Twyfelfontein, Namibia
This image shows a floor tile made of natural black, grey, yellow, brown stone. Scratches, spots, cracks, mottled shades, spots, speckles and subtle levels of light create a unique impression. Each tile of the entire floor is unique and has an abstract, textured, structured and mottled surface pattern. A full frame, close up, high resolution XXL image, shot from above.
Lichens growing on a stone in the Oshawa Valley Botanical Garden is known as Map Lichen (Rhizocarpon Geographicum.)
Explorer Clark etched in stone at Explorers National Monument called Pompeii's Pillar where famous explorer William Clark of Lewis and Clark, inscribed his name in stone. The monument sits beside the Yellowstone River which Clark used to travel back east after completing the exploratory journey to the Pacific Ocean. The park is near Billings, Montana in northwest United States of America (USA). John Morrison Photographer.
gold bar in graphite mold isolated on white background
Ancient bushmen rock engravings (petroglyphs) at Twyfelfontain in Damaraland, Namibia
ice crystals on rusty iron illuminated by the morning sun, macro
Khoi-San rock art on the wall of a rock overhang. West Coast of South Africa.
painted and scratched danger sign on the concrete electricity pole
Natural ecology, stone, rust, texture, background, abstract, plain stone, rock, building material, shape, solid, marble, granite, sea stone, wall, floor, stone wall, color, nature, simplicity
Vintage green and yellow cracked wall background.
Fremont style petroglyphs, Sego site, Thompson Canyon, Utah.
Old grungy brick wall texture in navy blue tone.
Stone slab with many oceanic fossils. The town of Erfoud is recognized as a center for fossil collectors.  The area is surrounded by quarries of fossils.
Free Images: "bestof:Pitsa panel 2.jpg Painted panel found at Pitsa Cave in 1934 http //www sikyon com/sicyon/Painting/spainting_eg html 6th century BC unknown Corinthian painter"
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