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Devonian fossils in limestone matrix include bryozoa, crinoid, and brachiopod fossils. Largest pieces are about 1/2 inch (10 mm). Fossil and Prairie Park Preserve, Silos and Smokestacks National Heritage Area, Rockford, Iowa, USA.
Old mine for extraction of sand and stone
(The Terra Cotta Warriors and Horses are the most significant archeological excavations of the 20th century. Work is ongoing at this site, which is around 1.5 kilometers east of Emperor Qin Shi Huang's Mausoleum, Lintong County, Shaanxi province. It is a sight not to be missed by any visitor to China. The museum covers an area of 16,300 square meters, divided into three sections: No. 1 Pit, No. 2 Pit, and No. 3 Pit respectively. They were tagged in the order of their discoveries. No. 1 Pit is the largest, first opened to the public on China's National Day, 1979. There are columns of soldiers at the front, followed by war chariots at the back. No. 2 Pit, found in 1976, is 20 meters northeast of No. 1 Pit. It contained over a thousand warriors and 90 chariots of wood. It was unveiled to the public in 1994.Archeologists came upon No. 3 Pit also in 1976, 25 meters northwest of No. 1 Pit. It looked like to be the command center of the armed forces. It went on display in 1989, with 68 warriors, a war chariot and four horses. Altogether over 7,000 pottery soldiers, horses, chariots, and even weapons have been unearthed from these pits. Most of them have been restored to their former grandeur. The Terracotta Warriors and Horses is a sensational archeological find of all times. It has put Xian on the map for tourists. It was listed by UNESCO in 1987 as one of the world cultural heritages.)
Areni, Armenia - August 3, 2024: ritual area in Areni - 1 cave excavations complex, Armenia on summer day
Close up of a multitude of fossil crinoids
Cave bear skeleton. Bones of a cave bear skeleton. Ursus spelaeus.
Boundary marker of the Peter Ballantyne Cree Nation reserve in Saskatchewan, Canada. Vintage photograph ca. 1919.
Old glass bottles in a cement wall. An ancient find. Background of the old wall. Selective focus, grain, blur. High quality photo
Old underground passage, dungeon, catacombs lined with stones and slabs with paths from speleologists (spelunking)
Mysterious image of a cave with amber lighting highlighting intricate details and shadows inviting exploration and discovery.
Various valleys and gullies of water at the bottom of Lake Cerkniška in Slovenia. The lake thus dries up and flows into underground rivers approximately every 50 years.
An archaeologist cleans a found artifact in the form of bones with a brush. Historical reconstruction of archaeological research of the 19th century
Dinosaur National Monument in Colorado and Utah
Ceiling details at Yungang Grottoes, ancient Chinese Buddhist temple grottoes built during the Northern Wei dynasty near the city of Datong, in the province of Shanxi. They are excellent examples of rock-cut architecture and one of the three most famous ancient Buddhist sculptural sites of China. The others are Longmen and Mogao.
Múzquiz, Mexico, January 17 -- Some coal miners outside a mine in the Múzquiz region in the state of Coahuila in northern Mexico, about 100 kilometers from the border between Mexico and the United States.
Xi'an, Shaanxi Province, China - October 28, 2015: Remains of terracotta soldiers of the famous Terracotta Army at excavation pit, the Qin Shi Huang Mausoleum of the First Emperor of China.
Sri Thep, an ancient city on the Southeast Asian network, demonstrates the wisdom of selecting a location that serves as a link between cultural diffusion and trade within and between regions.
Outdoors in abandoned mine looking for minerals extracting citrine quartz sunny day in beautiful warm tones
A cave system under the ancient archaeological grounds of Paphos, in Cyprus, open for tourists and locals to walk through and admire.
A wide panoramic view inside a natural dissolution cave formed in gypsum.
Archaeological excavations, archaeologists work, excavate an ancient clay artifact. Rulers show the size, depth and scale of work and items found
Exploring  petroglyphs in ancient rock dwellings and analysing the ancient drawings.
Zinzulusa cave on the Salento coast between Castro and Santa Cesarea Terme, one of the most famous anchialine caves in southern Italy Castro Marina
Boulder clay Geological formation exposed in a cliff face on the East coast of Yorkshire in England. This formation is easily weathered and so responsible for large coastal erosion and land loss to the sea.
Skeleton of dinosaur. Tyrannosaurus Rex simulator fossil in ground stone.
석회암 동굴의 벽 VD702
Sea fossils, Arwah Cave, Cherrapunjee, Meghalaya, India.
Weathered Buddhas at Yungang Grottoes, ancient Chinese Buddhist temple grottoes built during the Northern Wei dynasty near the city of Datong, in the province of Shanxi. They are excellent examples of rock-cut architecture and one of the three most famous ancient Buddhist sculptural sites of China. The others are Longmen and Mogao.
Free Images: "bestof:Excavation of fossils of Megatherium in plaster jacket. Bottles, cave. Rio Quequen Salada, Province of Buenos Aires. 1927? Name of Expedition: 2nd Captain"
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