Opar...the Atlantean colony in the heart of Tarzan's Africa. Opar...in the words of Edgar Rice Burroughs, a hidden city of "gold and silver, ivory and apes, and peacocks." Opar...is the starting point of this fabulous novel of twelve thousand years past, when Africa had in inland sea and a high civilization bloomed along its forgotten shores, when lost empires flew their time-vanished banners, and deeds of daring were commonplace.