"The lost race? That they lived on Ganymede thousands of years ago,
and had the greatest science ever known to the System. That they died,
nobody knows how, and the secrets of their civilization were lost.
Chahnn's only one of their ruined cities. There've been a dozen others
found. And full of gadgets and robots that nobody knows how to work.
There was a central power-source, but Earthmen have never figured out
how it worked or what fuel was used. The inscriptions found in the
cities didn't tell anything."
"Fair enough," Brown nodded. "Except you forgot one thing. You know the
Ancient Tongue. You speak it."