When the climb was included in the corsa rosa four years later, Simoni was at it again, this time winning ahead of his then teammate Leonardo Piepoli and a young up-and-coming Andy Schleck.
The climb was left out until 2010 when Ivan Basso soared clear on his way to claiming the stage and eventually the overall title, with the climb used a year later as Igor Anton skipped clear of a group containing Alberto Contador.
More than one route to the top of the climb has been used in the past, and it returns for Saturday’s crucial stage. Movistar's Nairo Quintana will be looking to seal his overall win with another stage, while Fabio Aru (Astana), Rigoberto Uran (Omega Pharma-QuickStep) and Domenico Pozzovivo (Ag2r-La Mondiale) – who incidentally was 17th on the climb in 2007 – will all be in contention.
Before then, enjoy this gallery of race photos, as well as our stage preview.
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