AlpspiX, Steel observation deck at Osterfelderkopf mountain, Germany

AlpspiX is a steel structure on the Osterfelderkopf mountain in the Wetterstein range at an elevation of 2050 meters. The platform consists of two intersecting walkways that extend far out from the mountainside.

The platform opened in 2010 and required multiple helicopter flights to transport the components to the remote mountain site. This construction method was necessary because of the altitude and difficult terrain.

The name combines "Alpspitze" and "X", after the two arms that cross above one another. At the opening on 4 July 2010, climber Stefan Glowacz roped up beneath the platform with a partner and displayed a banner reading "Our mountains don't need flavour enhancers", a protest backed by Mountain Wilderness.

The Alpspitzbahn cable car runs from Garmisch-Partenkirchen up to its mountain station, about 20 metres below the platform, which is reached on foot. The two grating-floored arms end at a slanted glass pane; the floor is see-through, so those uneasy with heights should stay on the rock. Sturdy shoes help on the rocky ground.

The name combines "Alpspitze" and "X", after the two arms that cross one above the other. At the far end of each arm a slanted glass pane closes the walkway and frames the panorama over the Höllental. The arms reach about 13 metres beyond the rock.