It's an adventure-romance mixed story set in a desert of Africa unknown to the world. First half of the story would thrill adventure lovers for the perilous journey through the desert. Next half is infused with mild romance and antiquities of ancient civilization of that desert. Overall I enjoyed the story.
Those, uncomfortable with Victorian age prose, might stumble reading the passages at the beginning. But with time it would be adapted.
There are archaic salutations and addressing words used by the author that amused me a lot, like - O child of Kings, O Bud of Rose, O people of mountain-side and many others.