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Indian Grinding Rock State Historic Park is a California State Park, preserving an outcropping of marbleized limestone with some 1,185 mortar holes—the largest collection of bedrock mortars in North America. It is located in the Sierra Nevada foothills, 8 miles (13 km) east of Jackson.
Cupstones, also called anvil stones, pitted cobbles and nutting stones, among other names, are roughly discoidal or amorphous groundstone artifacts among the most common lithic remains of Native American culture, especially in the Midwestern United States, in Early Archaic contexts.
There is uncertainty on how to translate the proper name Omarolluk (and omar rocks). According to the records of the Canada Centre for Mapping and Earth Observation Natural Resources, the features Omarolluk Sound and Omarolluk Formation were named after Omarolluk, an Inuit man who accompanied and guided R. J. Flaherty on numerous geological surveys of the Belcher Islands and elsewhere in the ...
The park is named for the "Medicine Rocks," a series of sandstone pillars similar to hoodoos some 60 to 80 feet (18 to 24 m) high with eerie undulations, holes, and tunnels in them. [5] [6] The rocks contain numerous examples of Native American rock art [7] and are considered a sacred place by Plains Indians. [8]
Bannerstones are artifacts usually found in the Eastern United States that are characterized by a centered hole in a symmetrically shaped carved or ground stone. The holes are typically 1 ⁄ 4" to 3 ⁄ 4" in diameter and extend through a raised portion centered in the stone. They usually are bored all the way through but some have been found ...
A bedrock mortar (BRM) is an anthropogenic circular depression in a rock outcrop or naturally occurring slab, used by people in the past for grinding of grain, acorns or other food products. [1] There are often a cluster of a considerable number of such holes in proximity indicating that people gathered in groups to conduct food grinding in ...
A new theory recently arising from an amateur archaeologist focused on Native American fiber processing, is the bird stone was a tool used for mat-making and weaving. [citation needed] Many stones have been found near waterways and swamp areas where reeds grow, these areas being where materials for mat-making were collected and processed. The ...
A native American grinder stone tool or 'metate' from Central Mexico. Metate and mano. The earliest traditions of stone sculpture in Costa Rica, including ceremonial metate, began in late Period IV (A.D. 1–500). Metate from the Nicoya/Guanacaste region have longitudinally curved and rimless plates.