alt Hacker NewsThe title is "not even" clickbait, just very confusing.
"The unique complex contains more than 1,300 square feet of underground space, including tunnels and storage rooms - and even a hand-built railway."
(Edit: I mean the original article, not the submission)
well I (the submitter) messed up and wrote 15M in the submission title (note the cap) in error just to add to the confusion (now fixed, soz.) … I thought “best” just to repeat the article title