Natural Science Forum / Biology / Paleontology / February 2005

I'm not sure if any excavations have uncovered this, but is it possible
for any of the known early cave dwellings to have had entrance walls or
barricades? There would certainly be many reasons for such
construction, with heat retention being a prime motivator. Not to
mention the large predators.

Tools could have left a trace of notches or grooves on cave walls, near
the dripline. Perhaps a sign remains of post-holes from a long-decayed
barricade?

kk