- 峠 — a mountain pass
- 峠道 — winding pass road
- 峠越え — crossing a pass
- 峠を越える — to get over the peak / critical phase
峠 is a 国字 (character made in Japan). It pictures 山 plus the pair 上 and 下: the high point where the climb up meets the descent down — a mountain pass, and by extension a “critical peak” in a situation.