Adnan Oktar describes the spiritual torment in hell

ADNAN OKTAR : Yes, of course it is a place of longing. They are devoid of all blessings. They have lost all the blessings that Allah bestows. They have lost happiness and joy, and all they have is regret in all its forms. For one thing, they can see the trees of paradise, the inhabitants of paradise. And the heads of the inhabitants of hell face backward, and they are strange-looking entities like those fantastical beings they used to imagine had been subjected to mutation. They see the beauties of the inhabitants of paradise, but they see it all on a small screen. They cannot be there with them, and that means terrible suffering for them. They suffer terrible longing, but they can never leave. They can never leave hell unless Allah so chooses.