David Wilcock mentioned this on his December 2010 coast to coast appearance.

This is a video of water from inside one of the modern Russian pyramids. Even though
it is in the middle of winter the water does not freeze; however, when the person hits
the bottle of water it instantly freezes, or so it seems.

Liquid Ice From The Pyramid

This video comes from the following website:
Welcome to Pyramid of Life

However it reminds me of this Mythbusters Episode 154 - Mini Myth Madness:

"MythBusters" Mini Myth Madness (TV episode 2010) - IMDb
MythBusters (2010 season) - Wikipedia, the free encyclopedia
Instant Frozen Beer: