I've got an 8.5mm rope that I was using in the icy conditions a couple weeks ago.
One particularly wet and freezing climb it got properly coated in ice (becoming stiff as a wire). Towards the end of the routes the ice had formed sort of 'collars' every inch or so.
Once home and dried out all these little bumps became apparent, you can feel them distinctly. They're along nearly the whole length of the rope:
https://photos.app.goo.gl/HTLgKeNRA4W3e8a39
https://photos.app.goo.gl/1uvjL1ZY2zkezkAN6
I've flaked it back and forth, wiggled it, stretched it, but they don't seem to go.
Had a few icy ropes but never seen this before. Any ideas on why and how to fix it?