Here is a colourised version as published on a Northest Sasquatch Search site: the creatures are taken to be Sasquatches on account of their size and pointed heads. On the contrary, I count them the same as the inbred Giant Warrior sect of Adena mound-builders, and the Adenas were fond of cranial deformation. Some of the reports of the graves mention that the skeletons wore suits of copper armour plates, and on my Oopa-Loopa cafe podcast I explained that most likely this means that the copper plates would have been sewn onto a leather or rawhide backing.
The overall effect was much like the armour worn by Aztec Warriors in the day of Cortez and the Conquistadores, when armour consisted of overall suits of hides or quilted cotton cloth. The addition of shiny copper plates would have made quite an impression. And the weapons that the Stone Giants are shown wielding resemble the wooden swords set with obsidian blades (microlith-style)that the Aztec Warriors used.
Please note also that conical headgear (helmets) were also part of the standard variations that were used at the time. There may or may not have been a direct continuity of the idea between the time of the Adenas and the time of the Aztecs as far as arms and armour goes, but I would not discount the possibility out of hand.
Conehead deformed skull, American division
Best Wishes, Dale D.