Shakala was one of the seven islands of the earth, and there were many kings o that island. A fearful battle took place between them and their troops and Arjuna.
शाकलद्वीपवासाश्च सप्तद्वीपेषु ये नृपाः। अर्जुनस्य च सैन्यैस्तैर्विग्रहस्तुमलोऽभवत्॥