, ▁with ▁the ▁line ▁re - open ing ▁on ▁ 1 ▁May ▁ 2 0 0 8 . ▁ ▁On ▁ 3 1 ▁March ▁ 2 0 1 0 , ▁the ▁ 1 0 th ▁million ▁passenger ▁used ▁the ▁cable way . ▁In ▁ 2 0 1 4 , ▁the ▁regular ▁ 6 - year ly ▁revision ▁of ▁the ▁line ▁was ▁undert aken . ▁In ▁ 2 0 1 6 , ▁the ▁upper ▁station ▁was ▁renov ated . ▁ ▁Operation ▁ ▁The ▁Ad lis w il - F elsen eg g ▁cable ▁car ▁is ▁techn ically ▁an ▁aer ial ▁tram way ▁( ), ▁where ▁the ▁two ▁cab ins ▁are ▁susp ended ▁from ▁a ▁single ▁support ▁cable ▁whilst ▁being ▁perman ently ▁attached ▁to ▁a ▁second ▁prop ulsion ▁cable . ▁The ▁two ▁cars ▁sh utt le ▁between ▁upper ▁and ▁lower ▁stations , ▁and ▁must ▁operate ▁together ▁so ▁that ▁when ▁one ▁car ▁is ▁at ▁the ▁lower ▁station , ▁the ▁other ▁will ▁be ▁at ▁the ▁upper ▁station . ▁The ▁line ▁is ▁operated ▁automatically , ▁under ▁the ▁super vision ▁of ▁a ▁single ▁employee ▁located ▁at ▁the ▁lower ▁station . ▁The ▁cab ins ▁and ▁upper ▁station ▁are ▁normally ▁un mann ed . ▁ ▁The ▁lower ▁station ▁is ▁located ▁at ▁an ▁alt itude ▁of ▁, ▁whilst ▁the ▁upper ▁station ▁is ▁at ▁an ▁alt itude ▁of ▁, ▁giving ▁a ▁rise ▁of ▁. ▁The ▁line ▁is ▁ ▁long , ▁and ▁passes ▁over ▁a ▁single ▁intermediate ▁tower ▁with ▁a ▁height ▁of ▁, ▁with ▁a ▁maximum ▁height ▁above ▁ground ▁level ▁of ▁. ▁The ▁span