7 The 100 Most Influential Inventors of All Time 7Magdalenian cave painting of a bison, Altamira, Spain. A. Held/J.P.
Ziolo, Paris
retouched blades, end scrapers, “nosed” scrapers, the
chisel-like tool known as a burin, and fi ne bone tools. They
also seem to have made tools for smoothing and scraping
leather. Some Cro-Magnons have been associated with
the Gravettian industry , or Upper Perigordian industry,
which is characterized by an abrupt retouching technique
that produces tools with fl at backs. Cro-Magnon dwellings
are most often found in deep caves and in shallow caves
formed by rock overhangs, although primitive huts, either
lean-tos against rock walls or those built completely from
stones, have been found. The rock shelters were used
year-round; the Cro-Magnons seem to have been a settled
people, moving only when necessary to fi nd new hunting
or because of environmental changes.