A long but beautiful tour of the Zürcher Oberland, taking in three lakes, a steam train, and a fun descent (and the ascent!) from Sternenberg, a small village.
At 10,000m from its oceanic base to the peak, Mauna Kea is the world’s tallest mountain. It provides an arduous high-altitude hike over barren volcanic terrain, where the numbers look straightforward but the lack of oxygen adds a considerable challenge. There’s a high chance of experiencing snow in Hawai’i (and an altitude headache!)