Apparently the correct term for ice which looks like glass, is “green ice”.
Whilst skating over some incredibly smooth “green ice”, Dave Young decided to poke a hole in it to see how good the visibility was. It then dawned on me that he could attach my ATC2k camera to the end of the pole and record upwards through the ice, so I pulled it out, handed it over, and the video below was the result!
Dave Young poking a hole through the ice with his pole
Alan Knowles standing on perfect 'green ice'
Dave Young standing on some super clear 'green ice'
Rocks as seen through the ice