"Its not that mysterious.... its made in three major parts (two ends and the central "tunnel"). The two ends are made from a thick wood glue-up that's then CNC'd to create the tapered tunnel entrance and the vertical leg/plane. The center is made from a series of oblong ring parts that make the tunnel when glued together. The leg is trimmed with eight pieces of wood to create the rounded edge and conceal the end grain. There is no veneer or vinyl wrap."
"When knocking off an old tool design, its really important to make it seem sexy and useful. Here is a video of mostly the same design from 1891 being restored really well: https://www.youtube.com/watch?v=JmSXo0XdWoA"
"Morgan square looks to be Invented/ patented by a US woman, Channon Kennedy under US-D847672-S. The website also lists Channon as the founder of the company."
"This is probably made of Glass Fiber Reinforced Concrete (GFRC). It can be either shot into a mold or cast to make fairly thin, lightweight profiles (usually building cladding or countertops). Depending on the climate, there is probably a footing or foundation buried below frost line underneath these chairs and table. A connector sticks out of the concrete foundation and receives the chair/table. This transition is likely concealed by slightly burying the bottoms edges. I'd say this is a fine example of an early Mayan or Aztec construction methodology."