Lincoln Memorial’s hidden 15,000-square-foot undercroft opens to the public after a century underground – 930 WFMD Free Talk by Marsha42 | Jul 20, 2026 | Lincoln History | 0 commentsLincoln Memorial’s hidden 15,000-square-foot undercroft opens to the public after a century underground 930 WFMD Free TalksourceSubmit a Comment Cancel replyYour email address will not be published.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.