While I own a substantial collection of North Face clothing and gear, I have never given much thought to the logo (which conists of three thick half-U shaped lines somewhat resembling a mountain).
Never Stop Exploring
I was surprised to learn that the image is an interpretation of Yosemite's Half Dome viewed from the west. The sheer North Face of Half Dome is on the left. Below is a photograph of the granite monolith taken by the one and only Ansel Adams. See the similarity?