Instruct: Classify the given review into positive or negative sentiment.
Query: Darkening th Heart

I think Heart of Darkness is a well developed novel. It's Congo River setting adds to the hardships that Marlow and his crew go through. Conrad's details to the characters and the setting give you a frim imagination of where they are, what they look like, and the activities they are going through.However, the book is told in frame tale or a story inside a story which makes this novel a little hard to read.I would highly reccomend this book to anyone who likes an adventure story. This novel has a lot of action and activity every page. It is a real attention grabber and is not so commonly know.