Welcome to Cryo Cold Cache, where extreme cold unlocks your answer!
Temperatures in cryotherapy chambers can range anywhere from -60 degrees to -220 degrees, so while nature has produced extreme cold, cryotherapy chambers are engineered to reach temperatures beyond what the environment can naturally sustain.
The Puzzle
To log the cache, you'll need to answer one simple question:
The lowest temperature ever recorded on Earth was set on July 21, 1983 in Vostok, Antarctica. What was the temperature ***.5? Use the first 3 numbers of that temperature as your answer.
Bundle up, think cold, and enjoy the hunt!
Happy caching!