 The cape has a "spade" or feather design, leading most archaeologists to conclude that it was a feather cape, a mantle well known from many Native American cultures in historical times.However, it seems unlikely that it actually is a feather cape.The blanket ... is decorated with a "spade" design, which, considering the accuracy of detail and faithfulness of depiction in the rest of the pipe, is a detail that should be interpreted literally rather than figuratively.