Cool sound from dropping a chunk of ice down a borehole

Peter Neff demonstrated what happens when you drop a chunk of ice down a 300-foot borehole in the Antarctic ice. Hint: pew!

Bonus video: Star Wars laser sound:

Image: YouTube / Storyful via Peter Neff

Pouring water down a 165 foot well sounds surprisingly odd
What does a big chunk of ice sound like being dropped down a 450 foot hole in Antarctica?