 अवृक्षं कामशैलं च मानसं विहगालयम्।न गतिस्तत्र भूतानां देवदानव रक्षसाम्।। 
 There is a mountain region known as Kama, and Manasa where there are no trees. It is a bird sanctuary. Not only living beings, even gods, demons and rakshas have no access to that place. 