Grüntenseilbahn, Aerial lift in Rettenberg, Germany.

The Grüntenseilbahn is an aerial cable system crossing the Allgäu landscape and connecting the valley station at 743 meters (2437 feet) elevation with the mountain station at 1685 meters (5528 feet). The system operates with two cabins using 28-millimeter support cables and a 16-millimeter pull cable while traveling at 18 kilometers (11 miles) per hour.

The system was constructed in 1971 to serve both public transport and material supply for the Bavarian Broadcasting facilities on Grünten mountain. Over time it became primarily used for operational and maintenance work related to broadcast equipment rather than passenger service.

From June 2007 the lift carried passengers only on Thursdays between June and October, with a maximum of 200 visitors per operating day and a reservation required through the Rettenberg tourist office. The cabins bear the white letters "BR" for Bayerischer Rundfunk, the broadcaster that runs the lift for its summit transmitter.

The ride requires sure footing when boarding and exiting since cabins hang high above the ground below. Keep in mind that the system no longer offers regular passenger service, and rides are typically reserved for personnel conducting maintenance work at the summit.

The cabin carries the white letters "BR" on its light blue lower panels, a mark of its operator Bayerischer Rundfunk. The lift exists to supply the broadcaster's transmitter on the Grünten, and since May 2014 it has carried only material and BR technicians, not the public.