For decades, scientists have been perplexed by a massive, state-sized hole in the Antarctic ice that only reappears sporadically for short periods of time.
Now, research has allowed them to put an end to the mystery and learn what causes it to appear.
A new study published in Science Advances finally revealed that the hole formed due to a combination of wind, ocean currents, and underwater geography that created the right saline conditions for melting sea ice.
