Fear of an Inverted Planet

In 1869, a man named Cyrus Teed experienced a vision revealing the true nature of the cosmos: Yes, the Earth is a globe, but we live on the concave surface of the hollow interior, with the sun, moon, and stars located at the very center, their apparent celestial ballet a complicated optical illusion. The strangest part of this story is that - inevitably, in a multiverse with infinite, infinite variations - there is at least one reality in which Cyrus Teed...was right.
The year is 1914, the world vastly different from our own. Not only "inverted", but a world in which steam power was never supplanted by electricity, the South won the American Civil War, magic may be real, and fantastic monsters lurk in the unexplored labyrinth beneath men's feet. Yet human nature, sadly, remains much the same. Millionaire tycoon Gainsayer Prescott has financed the most astounding steam-powered mechanical yet: a great walking/climbing machine that he plans to navigate into the earth, through, and beyond, onto the outer surface of this inverted globe, reputed to be encased in a miles-thick shell of solid gold.
Along for the ride are Gain's secretive personal assistant, the mechanical's bashful female pilot, and two recalcitrant hired guns, leaving a single seat open, a seat that multiple interested parties will do anything to occupy...up to and including murder. Fear of an Inverted Planet is a hollow Earth adventure like none other, positing a civilization living on the inside, eager to find its way out.
Chock full of intrigue, daring-do, romance, internecine conflict, action, horror, and science-wonder, we promise you you've never experienced an inner world novel quite like this before!