Toihikinawa: Ninja Night Tool

Toihikinawa “probing pulling rope“ is a simple ninja strategy for finding your way back the way you came in the pitch dark. From the Shinobi Hiden (Ninpiden) written as early as the 1560s to the 1650s. From the book, “Secret Traditions of the Shinobi“ by Antony Cummins and Yoshie Minami.