Amaterasu , who was in fury and grief , hid inside the Ama-no-Iwato ( `` heavenly rock cave '' ) , thus effectively hiding the sun for a long period of time .
For this , Amaterasu , sad , angry and scared , went to hide inside Ama-no-Iwato , the `` heavenly rock cave '' , so the Sun was hidden and the world became dark for along time .