峠 （とうげ） (mountain) pass, highest point on a mountain road, ridge, peak (e.g. of summer), worst (e.g. of an illness), crisis, critical point, most difficult part

峠越え （とうげごえ） crossing a mountain pass

碓氷峠 （うすいとうげ） Usui Pass

大菩薩峠 （だいぼさつとうげ） The Sword of Doom (1966 film)