If you choose not to hike down, and want to take the cablecar down, or if you are staying at the Rifugio Rosetta, then stay on the path until the Rifugio. The upper cablecar station is clearly visible from the Rifugio, and is only a 15-minute further walk. From the Cablecar station, you can hitch a ride back down to the parking lot.
A totally wonderful, satisfying climb. I thoroughly enjoyed it!
Quick Reference Ferrate Route Index
(*) Difficulty
rating from the newer Cicerone Guide by Fletcher and Smith
(**) Difficulty rating from older Cicerone Guide by Hofler/Werner