Ayesha, the Return of She by Haggard, H. Rider

Ayesha, the return of She, is set 16 years after the previous novel She. Horace Holly and Leo Vincey have spent the years travelling the world looking for Ayesha, along the way they experience many adventures, including avalanches, glaciers and even death-hounds before finally arriving in the court of Kaloon. At the court, they hear tell of a woman who Leo suspects to be Ayesha, however things are never simple and conflict soon follows them to Ayesha’s court. (Summarised from Wikipedia)