I remember that boulder!

My boss caught me looking at this today but was impressed enough to forget to give me the "at work lecture"

Wow!

Jon, any idea how long it took to work its way down. FMCK, love it and glad to be of service. Uistgr, thanks for the comment.

I spent a night in the summer of 1998 sleeping on the glacier with my dad near that boulder after we left to late and failed to reach the hut. Brr!

Well abmmc, a bit of googling and a lot of wading through scientific stuff throws up the answer that during the 2000s decade the flow rate at the top end of the glacier was about 10cm/day and at the bottom 30cm/day. So say average 20cm/day which is 73m/year. So not really very long until it got eaten up by the giant crevasses/ice fall a few hundred metres down from where it is in your photo!

Based on Google Earth it has moved about 600 ft between dec 30/2005 and jul 13/15. No need for the cerebral wattage, Jon - so that suggests the flow rate has reduced of late?

Stand corrected - there's a calculator on line, so no spherical trigonometry (no t be area of strength) 234 meters between mar 30/01 and dec 30/05 and 236 m between apr 2/11 and jul 13/15. So 60 m per year, give or take