* The Earth's Layers: The Earth is composed of several layers: the crust, mantle, outer core, and inner core. These layers are extremely deep and extend far below the surface.
* Depth of Open Holes: The deepest man-made hole ever dug is the Kola Superdeep Borehole, which reached a depth of around 12 kilometers (7.5 miles). This is a tiny fraction of the Earth's radius, which is about 6,371 kilometers (3,959 miles).
* Limited Visibility: Even in the deepest holes, you would only see the exposed rock of the Earth's crust. You wouldn't be able to see any of the other layers, as they are far below the surface.
Therefore, you can only see the Earth's crust from an open hole.
