The canary mountains is where it?s know for and is credited to have originated. I don?t know if others may have adopted this principle. This looks especially handy for those trail cutters in likewise terrain. The Ozark, Appalachian, Catskill, and other hilly and Mountainous places might be similar in some circumstances. For the daring, off the beaten path type hikers. 🤷🏻♂️