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Subterranean (edition 1999)
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Amazon.com Product Description (ISBN 0380792648, Mass Market Paperback)Beneath the ice at the bottom of the Earth is a magnificent subterranean labyrinth, a place of breathtaking wonders--and terrors beyond imagining. A team of specialists led by archaeologist Ashley Carter has been hand-picked to explore this secret place and to uncover the riches it holds. But they are not the first to venture here--and those they follow did not return. There are mysteries here older than time, and revelations that could change the world. But there are also things that should not be disturbed--and a devastating truth that could doom Ashley and the expedition: they are not alone.
(retrieved from Amazon Mon, 30 Sep 2013 13:57:08 -0400)
Making their way beneath the Antarctic ice toward the center of the world, a team of specialists traverses rocks, caverns, and underground rivers in darkness, not knowing the incredible wonders -- and terrors beyond imagination -- that lie ahead.
(summary from another edition)