Record in the middle of Bavaria: The deepest hole in the world – and an “absolutely hostile place’ At 9,101 meters deep, the world's deepest hole is currently in the Upper Palatinate. At the surface it measures 71 centimeters in diameter, but at the bottom it is only 17 centimeters.
Down there there are “temperatures of up to 280 degrees Celsius and pressures of 940 bar – an absolutely hostile place.” For comparison: a car tire has 2.5 bar.