Black, almost square dimensioned based on pictures. Very close to the dimensions of the original Monolith in 2001: A Space Odyssey. The only source I could find is from the Daily Freeman.
Appeared in a Woodstock cornfield.
Dates & Classification
Questionable monoliths, not confirmed to be knockoffs but likely considering the origin or appearance of the monolith.
Number of Sides
Four Sides (Rectangular or Square)
Articles & Media