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The fun at Interlaken Ropes Park is looking across the trees and working out how to reach the next platform. Rope bridges, suspended obstacles and zip lines keep changing the question. You do not have to make the hardest course the point of the visit.
For a mixed group, check the age, height and supervision rules before booking. They decide who can use which course. Wear closed shoes, allow time for the briefing and leave room for a break. A few hours among the trees can be plenty, especially when someone's confidence is still catching up.