Why can't i dig a hole to the other side of the earth??

 why can't I dig a hole to the other  side of the earth!!

Earth's crust
High or low where ever you go on the planet surface, you are traveling on or above the earth crust. our planets outer layer began taking shape 4.5 billions years ago at of the fire ball of asteroids comets and other space debris   that clumped  into a gooey lump to form earth. As the surface cooled and hardened  earth crust was formed it comes in two types when you reached down and feel the ground you are touching Continental crust ranges from 6 miles to 47 miles deep under Mount Everest (tallest mountain on earth) Continental crust consist of less dense and much older rock than Oceanic crust .oceanic crust is about 4 miles thick at the bottom of the deepest ocean trenches. it is still taking shape in these mid Ocean ridges where molten rock erupts  from cracks in the ocean floor and cools to form the New crust. Neither crust seems particular thick right? tell that the geologist and mining companies that tried digging through it. despite using mid Ocean ridges as a starting point for digging  operations they have not been able to pierce the crust. it's too tough fiercely hot and full of hazards from Pockets of molten rocks to lakes of boiling sulfur.




THE MENTAL 
Even if you manage to dig through the earth crust you have literally only scratch the surface of the planet.Below lies the mental a layer of semi molten metal such as iron magnesium and Aluminium the heat and pressure here are intense enough to compress carbon into diamonds the hardest natural material on the earth the easiest way to reach The Mental is to ride the Oceanic crust. once it reaches the mental, Oceanic crust Melts and return to the surface as Magma in mid Ocean ridges where it is recycled into newcrust. the whole process takes about 200 million years, so you might want to pack a  toothbrush.

The outer and inner cores
A sperical mars size sea of molten iron and Nickel swirls 1800 miles beneath your feet. it flows around as inner core of iron two third the size of the Moon.temperatures in the inner core exceed  10000  Fahrenheit or 5600 degree Celsius hotter than  the surface of the sun yet intense pressure here locks the molten iron into a solid sphere good luck digging through that.






The big squeeze
 The Deeper you dig into Earth The Deeper  your troubles. gravity pulls trillions and trillions of tons  of rocks and metals toward the planet centre and the weight of all of that rough stuff above your head increases as you dig, the pressure in the inner cores is 3.5 million times the air pressure you feel on the planet surface. your body would suffer seriously damage once you hit 27 times the surface pressure.

Tug-of-war 
If not for the crushing pressure it creates around you, gravity would be your best body during the long haul to the centre of the earth. it's all downhill to the earth's inner core, after all  you would actually experience zero gravity at the exact centre of the planet.  but you have only made it to the halfway point. You must repeat all the backbreaking, physics-defying work that got you here-except now gravity is working against you. it's time to begin the uphill battle to dig your exit tunnel through the opposite half of the planet. That's roughly 3958 miles of molten metal and solid rock you will need to dig through, all of it bouncing off your head as you climb up, up, and up toward the planet's surface.
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