We want to go on a mountain hike lasting several days soon. I have good shoes. What other equipment would you recommend?
Although I am not familiar with this sport, I recommend taking a look at the linked page, which - in my opinion - contains good tips for various hiking and mountaineering scenarios.Packing list: Well dressed when hiking & mountaineering – berghasen.comOur packing list for hiking and mountaineering! Also: how to dress perfectly for different conditions!berghasen.com
What I would definitely recommend would be hiking poles, as you never know what surface you will be walking on, and definitely a waterproof backpack. Especially in the mountains you always have to expect rain. And there's only one thing worse than wet clothes, wet spare clothes. This and other interesting and useful things can be found here, for example