Quotation from: The Chessmen of Mars

Written by: Edgar Rice Burroughs

To search for Tara of Helium in the vast, dim labyrinth of the
pits of O-Tar seemed to the Gatholian a hopeless quest,
foredoomed to failure. It would be wiser to seek the streets of
Manator where he might hope to learn first if she had been
recaptured and, if not, then he could return to the pits and
pursue the hunt for her. To find egress from the maze he must
perforce travel a considerable distance through the winding
corridors and chambers, since he had no idea as to the location
or direction of any exit. In fact, he could not have retraced his
steps a hundred yards toward the point at which he and Tara had
entered the gloomy caverns, and so he set out in the hope that he
might find by accident either Tara of Helium or a way to the
street level above.