North/South Poles Inquiry

I've seen consistent information regarding so proclaimed "Entrances to the Inner Earth" at each Pole. I also read that Olaf Jansen story which compelled me to create this thread. I just wanted some information on possible satellite photographs of either pole region. Obviously if there were giant holes 1,400 miles across at each pole somebody would've noticed by now. But possibly there are anomalies such as those on the moon and mars that we can disect as a group. Make a fun project out of trying to find the entrance to the inner earth. Thanks for all who reply with info.