Video Transcription
The pressure of said water column could reach 20. 000 atmospheres, depending on temperature, impurities and other parameters.
This is enough to produce special and exotic forms of ice that can remain solid even at high temperatures.
Besides, unlike the ice we're used to, these modifications are heavier than liquid water.
For example, the density of ice 7, most likely in these conditions, is approximately 1650 kg/m3.
This ice is deposited at the bottom of the planetary ocean, forming a massive cryosphere that surrounds the heaviest core of the planet.