Sending a rock down the deepest hole!!!!

Deepest Hole in the World revealed, filmed near dugway military base in the Utah desert. Filmed the morning of July 4, 2013 (the camera time stamp was .
Created using VideoFX Live:
30second drop. Do the math. Located near Dugway Proving Grounds (Area 52) in Western Utah. They test a lot of top secret stuff underground out there.
SciShow takes you down the deepest hole in the world -- Russias Kola Superdeep Borehole -- explaining who dug it and why, and what we learned about Earth .