"All the way back" vs "All the way in the back"

Are "All the way back" vs "All the way in the back" the same ?

I found the explain for "All the way" phrase in here: https://www.macmillandictionary.com/dictionary/british/all-the-way

Do they depend on the context of the sentence?

For example, someone invite a friend to his exhibition. There is a picture that he want his friend to see it and he said: "It’s all the way in the back.". Does he means the picture is in somewhere in the back of the exhibition or it’s picture he put all the effort into doing it? If his mean is the second one, what is the role of the phrase "in the back" in this sentence? Does it emphasizes the phrase "all the way"?