Monolith Image × Previous Next Close Map Location Accuracy Approximately Description A perfectly smooth mirrored surface. No scratches, smudges, fingerprints. Notes Make "news" sources and social media visible and open to the public. Avoid using locked accounts. Dates & Classification Date Spotted 2021-07-10 Classification Unknown status or Unclassified Multiple Monoliths ✖ Physical Qualities Material Stainless Steel Construction Hollow Number of Sides Four Sides (Rectangular or Square) Texture Mirrored Top Geometry Inclined Plane Markings No Markings Articles & Media Detroit Mountain Monolith appears on July 10th, 2021.