Well, I guess if you define “chamber” as “a cavity” the answer is yes. But that’s pretty vague.
Here’s an update regarding Zahi Hawass’ investigation of what might be under the Sphinx. No, I don’t think anyone’s going to find a “Hall of Records,” but I do have to admit I don’t completely trust Zahi’s announcements on anything. If there were anything interesting, he’d find a strategy for self-promotion in it before he went public. Just my opinion.