This guide will lead you through the steps to unravel the enigmatic Second Floor Secret Passage Puzzle, a thought-provoking challenge that intertwines the principles of astronomy with cryptology.

More information: E. Maconi et al, The Solar System's passage through the Radcliffe wave during the middle Miocene, Astronomy & Astrophysics (2025). DOI: 10.1051/0004-6361/202452061 ...