A farmhand once found a prehistoric tool buried there.

Large quantities of pebbles have also been found, but archaeologists have not determined whether they were used in the construction of prehistoric tools.

Beginning with fossils and prehistoric tools, it begins to focus on the trade industry of North Dakota's first white settlement.

We peeked in cellars where boys worked with prehistoric tools by firelight.

Much like battle axes, daggers evolved out of prehistoric tools.

In some of these places it is possible to find chert knapping stones and some prehistoric tools.

A Celt (a prehistoric axe-like tool) was also excavated during the 18th Century.

There's a prehistoric tool called the Acheulian hand axe.

He found that the marks were characteristic of the use and matched marks on prehistoric tools.

The earliest traces of settlements in the area include scattered La Tene era graves and individual prehistoric tools.