wintry mountain; mountain in winter
Refers to a mountain covered with snow or in winter conditions, often emphasizing the season's scenery or harshness.
The scenery of a mountain in winter is beautiful, but there are many dangers.
mountain popular for winter climbing
Specifically a mountain that attracts climbers during the winter season, often implying established routes or popularity.
This mountain popular for winter climbing is easy even for beginners.
Compound of 冬 (ふゆ, winter) and 山 (やま, mountain).