Finder Icon to Go to Enclosing Directory

Finder icon to to navigate up one level to enclosing directory would make my life so much easier. Especially when I have to move up several directory levels. I realize there's a keyboard shortcut, but sometimes I navigate via mouse only. There's also a menu option, but that's more involved than just clicking an icon -- which has been available in Linux & windows forever. I can't imagine why Apple would not include such a self-evident function, given that they're better in almost every other category of user experience. There was once an app to create such an icon, but I don't think it goes with High Sierra (up to & including Sierra only). info edited in from deleted 'answer'