This is inspirational: at 74, the amazing Peter Habeler has done thew Eigerwand again: http://www.planetmountain.com/en/news/alpinism/peter-habeler-74-climbs-eiger-north-face-again-with-david-lama.html

Good to know that it isn't only cavers who are getting older. But even if we are, there is hope yet!

Indeed. And the first Brit to solo the Eiger North Face, Eric Jones, climbed the Devil's Tower in Wyoming, USA in 2014 with long-time friend Jeremy Trumper. Both climbers well into their seventies. See http://www.walesonline.co.uk/lifestyle/youre-never-old-dream-says-6970356

I saw a talk by Eric Jones in Buxton on Wednesday, now 80. Very inspirational.