Hidden beneath the Lincoln Memorial: A century-old underground vault is about to open to the public – AOL.com by Marsha42 | Jul 6, 2026 | Lincoln History | 0 commentsHidden beneath the Lincoln Memorial: A century-old underground vault is about to open to the public AOL.comsourceSubmit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment *Name * Email * Website Save my name, email, and website in this browser for the next time I comment.