From epubbooks.com:
Ayesha is She-Who-Must-Be-Obeyed, a 2,000-year-old queen who rules a fabled lost city deep in a maze of African caverns. She has the occult wisdom of Isis, the eternal youth and beauty of Aphrodite, and the violent appetite of a lamia. Like A. Conan Doyle’s Lost World, She is one of those magnificent Victorian yarns about an expedition to a far-off locale shadowed by magic, mystery, and death.