縄文モチーフです

Joumon motif

縄文 "Joumon" means "cord marks". The "Joumon Period (縄文時代)":https://en.wikipedia.org/wiki/J%C5%8Dmon_period is the earliest named period in Japanese prehistory, possibly reaching as far back as 14,000 B.C. It is named after its characteristic style of pottery, where cords or rope were pressed into the wet clay, leaving an impression.