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[Appendix 2] (4) Jambudvipa
From the perspective of Jain Agamas, Jambudvipa is located in the center of this vast universe. It spans one lakh yojanas and is the smallest. It is surrounded by the Lavanasamudra (Salt Ocean). The Dhatukikhandadvipa surrounds the Lavanasamudra. Similarly, there is another island and another ocean beyond, and the number of all these islands and oceans is countless. The name of the last ocean is Swayambhuraman Samudra. The Lavanasamudra is twice the size of Jambudvipa, and the Dhatukikhandadvipa is twice the size of the Lavanasamudra. In this way, the islands and oceans continue to be twice the size of each other.
This island is named Jambudvipa because of the eternal Jambubhumi tree that exists here. In the center of Jambudvipa is the Sumeru mountain, which is one lakh yojanas high.
The diameter of Jambudvipa is one lakh yojanas. Its circumference is 3,16,227 yojanas, 3 kosas, 128 dhanush, 13 angulas, 5 yavas, and 1 yuka. Its area is 7,90,56,94,150 yojanas, 1 kosa, 15 dhanush, and 2 hathas.
The Srimad Bhagavata describes seven islands, with Jambudvipa being the first.
From the Buddhist perspective, there are four continents, with Sumeru at their center. To the east of Sumeru is Puvva Videha, to the west is Apargoyan or Apar Godan, to the north is Uttar Kuru, and to the south is Jambudvipa.