Lake Vostok
Keyword
XV Episode 2[1]
Lake Vostok, the location where the coffin surfaced, is a vast underground lake located beneath 4 kilometers of Antarctic ice, encompassing over 14,000 square kilometers.
To give an idea, that's approximately six Skytrees worth of ice covering 294,000 domed baseball stadiums worth of water.
"Using things like radio towers and baseball stadiums as units of measurements is pretty common when talking about pro wrestlers...
But if you think about it, it's pretty weird."―Yukine Chris