A world within our world. A secret tunnel hidden under the Eiffel Tower. A small central sun at the center of our planet warming those lands in the hollow earth. Seas with no horizon because of the concave nature of those lands. Adventures beyond the imagination of the modern man at the dawning of the twentieth century.

In the year 1889, seasoned adventurer, Marco Walker, finds himself alone in the hollow earth with its many dangerous creatures, but when Marco discovers what looks like human footprints near his encampment, everything changes. Has he found a friend or foe in these the wildest of lands?

From Robert J. McCarter, author of Woody and June versus the Apocalypse, comes an imaginative story of adventure and companionship unlike anything before it.