Tōge (峠) is a Japanese word literally meaning "pass". It refers to a mountain pass or any of the narrow, winding roads that can be found in and around the mountains of Japan and other geographically similar areas, like the legendary Nordschleife in Germany.
This app covers all Touge in Japan, and provides a lot of information about Touge such as height, history, situation of road, origin of name and so on.