Thongor still reigns as king upon the throne of Patanga, but while he is off on a personal mission, his 16-year-old son, Thar, rules in his absence. When Thar learns that the ally kingdom of Kathool is attacked by mysterious enemies riding upon dragons, he takes it upon himself to investigate and eventually finds that … More Review of “Thongor Conquers the Underground World” by Lin Carter & Robert M. Price