Thanks for the pic Newfie, eye witness account of the incredible affairs unfolding as we speak
The ice loss is has a doubling time so is exponential and accelerating, it has multiple feedbacks mechanisms that will likely push the whole thing over the brink, a tipping point that will sometime destabelize the whole ice sheet, since we are going for a hot house, the death of the GIS is a certainty. The question is how fast this can happen.
Current SLR is increasing with a doubling time, I think most of the melt coming from Greenland, bit of Baffin/Nova Zembla and the ice down under, bit of mountains in between.
Paul B. talks about signs that point to a collapse, no linky but I am sure we can find some report or paper on it.
Just like we thought CC were a gradual process taking centuries, I think we are finding out that giant ice sheets like the GIS can collapse abruptly, in decades.
I'd love to find that paper on tsunamis caused by a Heinrich event

Could we find pics from cracks on the Southwest part of the GIS?
For starters, a bit old from 2011:
https://www.clim-past.net/7/1297/2011/c ... 7-2011.pdfA major effort has been devoted in the last decade in order to understand rapid glacial climate variability as registered in many climatic archives. Greenland ice core records indicate that the last glacial period was punctuated by more than 20 abrupt warmings larger than 10 K (Dansgaard-Oeschger events) followed by progressive cooling (Dansgaard et al., 1993; Grootes et al., 1993). As revealed by the study of marine sediment cores in the North Atlantic, six of the temperature minima in Greenland were also coeval with unusual amounts of ice rafted debris (IRD) originating primarily from the areas around Hudson Bay (Bond et al., 1992). Several mechanisms have been proposed to explain these anomalous ice discharge events, known as Heinrich events. The first considers these to be internal oscillations of the Laurentide ice sheet (LIS) associated with alterations of basal conditions (MacAyeal, 1993; Calov et al., 2002). A sudden break-up of ice shelves has also been implicated via atmospheric warming (Hulbe et al., 2004) or tidal effects (Arbic et al., 2004).
VT and jara, it is true that the GIS sits encaged within a ring of mtns, the immense weight must push the Earths crust down as well.
We'll have to look into recent papers to find out what is happening.
Before the discovery of moulins working all the way down to the bedrock, we thought of the GIS as a stable mass of ice, a block instead of a dynamic fluid wonder of nature it seems to be.