The trolley is snowed in. In mid-September. High up on the Zugspitze, Germany’s highest mountain, this is not a rare event. Luis Schwatz dons his helmet, puts on his climbing harness and climbs the frosty ladder with a colleague until he reaches the boom, then continues for three or four more metres. It’s a first-class vantage point. He’s a dizzying 2,500 metres above sea level, with the shining turquoise Lake Eibsee lying at 973 metres above sea level. The Zugspitze is cloaked in cloud. The views are breathtaking, but it’s a vacuum, so he can devote his undivided attention to the trolley of the Liebherr tower crane. If it starts up with its weight on the hook - a prefabricated concrete part - chunks of snow and ice could fall onto the site below. To prevent this, Luis Schwatz is armed with a scraper and a few blows of a hammer. Now the trolley can work safely and freely.

Really strong: With extreme conditions athigh-altitude, the crane, with parts weighing many tonnes, is assembled by helicopter with millimetre precision.

Ever since, maintenance and modernisation have been long-term plans on the Zugspitze. The thing is, they’re not all that easy to implement up on the mountain. “An alpine construction site is an adventure in many respects”, says Hurm. “Technologically, on an engineering level, logistically, and when it comes to heights and weather conditions. And, last but not least, it’s a constant challenge in terms of patience and persistence”.

The ‘reward’ for Hurm and his team is not only the most spectacular view of the site, but also the end result: a superlative cable car, the like of which has never been seen and which is set to break three world records: the highest steel cable car prop (127 m), the largest total elevation gain (1,945 m between the valley and upper stations), and the longest free span (3,213 m). Its previous capacity of 260 will be increased to 580 mountain enthusiasts per hour.

On the top: At an altitude of almost 3,000 meters, the Liebherr flat-top crane becomes an attraction - not only for construction workers but also for tourists on the peak of the Zugspitze.

The countdown is on – there are just a few weeks until the launch. The last of the four new suspension cables for both cabins at the mountain station was moved into place and secured in mid-October. It was a herculean task. Each of the 4,900-metre-long suspension cables weighs 153 tonnes. The suspension cables on the old cable car managed 200 metres per hour on their way to the top. That was with both cables weighing 30 and 39 tonnes - light as a feather by comparison.

Around 100 people are currently working on the site. The wind is whistling around up at the summit cross. Ice crystals dance around the steel frame and cables. The -2°C on the thermometer feels much colder. Everything up here, it seems, is extreme. Even the composure of Martin Hurm: “You can’t fight the weather up here”, he explains. “But you can make the best of it”.

The two cable car cabins with floor-to-ceiling glass have already arrived, says Hurm. They’re wrapped up at the valley station waiting to be assembled. “They will be put into operation on 21st December”. There’s no doubt in his mind. And the crane? “It will be staying put until the spring, when all of the work is completed”, explains Hurm. Its concrete foundation will be staying, however. “We know we might need the crane again at a later date”.