Lee Skinner said:
See the National Geographic article about Xe Bang Fai River Cave at:
http://news.nationalgeographic.com/news/2008/10/photogalleries/river-caves-photos/index.html/
I just got my hard-cover November issue of National Geographic magazine in the mail
today, and it has another article on the Naica mine's Cueva de los Cristales with its giant
gypsum crystals.
<http://ngm.nationalgeographic.com/2008/11/crystal-giants/shea-text> There is also
an advertisement for IBM inside the front cover featuring a two-page spread of an
unidentified Paleolithic art cave in Europe, probably Lascaux. See
<http://www.culture.gouv.fr/culture/arcnat/lascaux/en/>.
Mark Minton
