Liechtensteinklamm — The Helix Chasm

One of the longest, deepest, and most impressive gorges in the Alps. The Liechtensteinklamm is famous for its narrow walls that are so close they almost block out the sky. Following a massive rockfall in 2017, the gorge was upgraded with the 'Helix'—a spectacular spiral staircase made of corten steel that descends 30 meters into the depths of the chasm. The path leads over bridges and through tunnels to a massive 50-meter waterfall at the end of the walkable section.

Route Typology: Guided Jungle Expedition. The Lost City Trek leads to 'Teyuna', an archaeological site of the ancient Tairona civilization built around 800 AD. Located deep in the humid heart of the Sierra Nevada de Santa Marta (a UNESCO Biosphere Reserve), the 44km route involves a cumulative vertical strain of 2,700m. The final approach requires a climb of 1,200 ancient stone steps. While the max altitude is only 1,200m, the primary challenge is the extreme tropical humidity (often 90%+) and consistent heat, paired with steep, muddy jungle ridges and river crossings.