とうげtouge
1.

A mountainous path or route marking the highest point before descending, often used by travelers crossing from one side of a mountain range to the other.

2.

The peak period of something, representing a time of greatest intensity or thriving, akin to the climax of an event or condition.

3.

A significant point of transition or change, particularly in relation to overcoming challenges or obstacles in both a physical and metaphorical sense.

Example:

私達がにさしかかる頃に雨になった。

うすいとうげ碓氷峠usuitouge
1.

A mountain pass located on the border of Matsuidamachi in Anjō City, Gunma Prefecture, and Karuizawa Town in Nagano Prefecture, known for its challenging terrain and historical significance as a vital route connecting the Chūō Highlands with the Kanto Plain.

2.

The primary steep pass on the Nakasendo, historically significant in the Edo period, serving as a critical transportation route for travelers and goods between central Japan and the Kanto region.

とうげみち峠道tougemichi
1.

A narrow and often winding road that traverses a mountain pass, typically connecting two valleys or regions and characterized by steep inclines and scenic views.

2.

A route that leads through mountainous terrain, often used for travel between different areas, and may present challenges such as sharp curves and changing weather conditions.

3.

A pathway situated at high elevations, specifically designed for navigating the inclines and declines of a mountain range, which may hold historical significance for trade or travel.

とうげご峠越tougegoe
1.

The act of traversing a high point in a mountainous area that connects two valleys, often involving a challenging ascent and descent.

2.

A journey or passage through elevated terrain that is characterized by steep slopes and potentially changing weather conditions.

3.

The experience of moving from one side of a mountain to another, typically involving navigational skills and awareness of the surrounding landscape.

4.

The transition between different geographical regions marked by a high elevation, where one often encounters unique natural features and views.