And here's an interesting curiosity...

"The detached portion of glacier was massive, estimated at 200 meters (yards) wide, 80 meters tall and 60 meters deep."

(200 x 80 x 60) / 666 = 1441.441441...

14 mirrored is 41, so you have repetitions of 14.

July 14th is Pandemonium Day.

https://nationaltoday.com/pandemonium-day/

Also, depending upon how you look at the repeating digits, you also see 44 repeating. The 44th President of the US = Barack Obama.

I'm not saying this is what was intended, but it is an amusing coincidence.