There is a fiery girdle all around it, of ten Yojanas in width and it is incapable of being approached by Yakshas and Rakshasas and Danavas.
न तत्र शक्यते गन्तुं यक्षराक्षसदानवैः॥ दशयोजनविस्तारमग्निज्वालासमावृतम्।