We accompany cave explorers in the Untersberg. Deep underground, they explore unknown terrain, work under extreme conditions, and are completely cut off from the outside world. Teamwork and trust are vital for survival.

Produced by The World Wildlife Fund WWF. Anton Reyst travels to Hudson Bay in the north of Canada to get a firsthand look at the effects global warming has had on the landscape and wildlife there.

We travel from Untersberg to Berchtesgaden. In doing so, we learn something about the history of the region, salt mining, and the training required to become a miner.

Successful ice climber Ines Papert talks about how she discovered her passion for the mountains, the challenges the sport entails, and the life lessons she has drawn from it.

This video is about the life of alpine farmers along the Königssee and how they handle their cows. The journey also continues to the mysterious Untersberg, which is known for its legends and caves.

Toni Sauper carefully prepares his horseback riding tours in the Alps and repeatedly explores new paths in the high mountains for this purpose. The journey continues through the impressive landscape of the High Tauern with its mountain lakes, glaciers, and important water reservoirs.

In this part, we learn more about the marmots that the Radels have taken care of for many years. After that, the journey leads to Hohe Tauern National Park and to Austria's highest mountain, the Grossglockner.

Jörg Steiner tells us about the craft of loden production, a tradition that has been passed down through generations. In Sankt Veit im Pongau, we visit a very special marmot sancutuary.

This video is about the long journey of the northern bald ibises to their wintering grounds in Italy and about traditional craftsmanship in the Alps. Besides nature and the mountains, the production of loden, a traditional and very durable woolen fabric, also plays an important role.

The next stage on the journey from Salzburg to Königssee is Anif Palace, which served as a refuge for King Ludwig III during the November Revolution. We also meet a biologist who prepares an endangered bird species, the northern bald ibis, for life in the wild in an extraordinary way.

High above Salzburg's old town, mountain cleaners ensure that loose rocks don't become a danger to the people in the city. It's a profession with great responsibility that requires trust in oneself, teamwork, and plenty of courage.

This part is about how windsurfing has changed throughout the years. Björn Dunkerbeck talks about new sports, his own goals, and why today it's mainly his sons who compete in the harsh conditions.

In this part we learn more about Björn's family and what influence they had on his career as a professional windsurfer.

Bjørn Dunkerbeck is the greatest legend windsurfing has ever produced—surpassing even his long-time rival and now friend, Robby Naish. RTL reporter Laura Pröscholdt went to visit him and his family on Gran Canaria and learned: Windsurfing keeps you young!

How do we know what people ate in the Middle Ages? Bones found at archaeological sites provide a clear answer to this question.