The term last ascent has been used to refer to an ascent of a mountain or face that has subsequently changed to such an extent – often because of rockfall – that the route no longer exists (e.g., the south-west face of the Aiguille du Dru in the Alps). It can also be used facetiously to refer to a climb that is so unpleasant or unaesthetic (due to loose rock, excessive brush, poor route selection, etc.) that no one would ever willingly repeat the first ascent party's ordeal.