I was thinking ... fesinatingly ... if this is not an entrance to what many scientists believe to be hollow earth ... many believe earth is hollow ... inside lives a human like civilization with its own sun and atmosphere. Huge holes in north and south poles lead you inside.
There have been expeditions ... I cant remember much about one of early 19th century ... a US navy admiral claims to have entered this hollow earth and met humans living inside it. After 2nd world war I believe. Google please.
