H. Rider Haggard 
People of the Mist 

Sir Henry Rider Haggard was an English writer of adventure novels set in exotic locations, predominantly Africa, and the creator of the Lost World literary genre. His stories, situated at the lighter end of the scale of Victorian literature, continue to be popular and influential. He was also involved in agricultural reform and improvement in the British Empire. The People of the Mist is the tale of a British adventurer seeking wealth in the wilds of Africa, finding romance, and discovering a lost race and its monstrous god. (Excerpt from Wikipedia)