One encyclopedia of archaeology treats "pitted stone", "cupstones", and "nutting stones" as synonyms and says that they "may have been … See more

Similar objects can be found on all continents except Antarctica. They are associated with Celtic Europe, prehistoric Australia See more

Early observers saw the processing of mast using stones, and one later recreation achieved similar results: nuts were placed, one at a time, on stone (an "anvil" stone) and then struck … See more

• Knocking stone See more

These objects have received little study, perhaps because edged tools and weapons have more intrinsic interest to private collectors, … See more

There are several ethnographic accounts of the Native use of nutting stones in the historic times. One account says "the Virginia Indians in … See more

Nutting stones can be very similar in appearance to omars. Omars are naturally formed stones that have hemispherical bubbles in them. See more