Eric von Harben, the son of an old friend of Tarzan, has disappeared! Tarzan is on the trail to find him when he discovered a mysterious lost valley where two surviving outposts of ancient Rome survive, almost unchanged by time. Tarzan is thrust into the arena and must face a new enemy in the Emperor of Castra Sanguiarius.

In this classic fantasy adventure, a rescue mission leads Tarzan to a dangerous lost civilization of medieval knights. Deep in the jungles of Africa, a party of evil slave traders search for the Leopard City of Nimmr in the Valley of the Sepulcher, where they hope to find treasure. Stumbling in that direction is a lost American photographer, James Blake, whom Tarzan has vowed to rescue. But the valley holds more than treasure. Centuries ago, a group of Knights Templar got lost on their way to the Holy Land and became shipwrecked. Now they are ready to continue their Crusade, armed with lances, swords, shields, and pikes. Soon Blake finds himself in armor, fighting for the honor of a princess, and Tarzan prepares for battle. That is when the slave traders strike!

When David Innes and Abner Perry set out to search for mineral deposits in Perry's newly invented Mechanical Prospectro, they never dreamed of discovering the beautiful, terrifying world of Pellucidar five hundred miles beneath their feet. Cast into a country of fierce fighting men, beautiful women, and vicious beasts, David and Abner take sharply diverging paths. David and his mate, Dian the Beautiful, set out to teach Pellucidar the ways of civilization and succeed in gathering a number of primitive kingdoms into the Empire of Pellucidar. Meanwhile, Abner turns his inventive genius to the science of aeronautics, with dire results for both David and Dian.

"Tarzan and the lost empire" by Edgar Rice Burroughs. Published by Good Press. Good Press publishes a wide range of titles that encompasses every genre. From well-known classics & literary fiction and non-fiction to forgotten−or yet undiscovered gems−of world literature, we issue the books that need to be read. Each Good Press edition has been meticulously edited and formatted to boost readability for all e-readers and devices. Our goal is to produce eBooks that are user-friendly and accessible to everyone in a high-quality digital format.

This edition features new cover art and a frontispiece by Joe Jusko, a foreword and afterword by today's luminaries, and a rare and never-before-published bonus materials from the archives of Edgar Rice Burroughs, Inc. in Tarzana, California.

Reproduction of the original. The publishing house Megali specialises in reproducing historical works in large print to make reading easier for people with impaired vision.

This is the twelfth book in the Tarzan Series. Tarzan and a young German find a lost remnant of the Roman Empire hidden in the mountains of Africa. This novel is notable for the introduction of Nkima, who serves as Tarzan's monkey companion in it and a number of later Tarzan stories. It also reintroduces Muviro, first seen in Tarzan and the Golden Lion, as sub-chief of Tarzan's Waziri warriors.