Jambu (Jambudvipa) is the central continent in Jain cosmology, the heart of the human-world (māṇuṣya-loka) in the middle world (madhya-loka). A typical cosmological map places Mount Meru at the center of Jambudvipa, with surrounding oceans and other concentric continents encircling it. This map illustrates the structure of the universe as described in Jain scriptures and commentaries.

Key points you may often see on such maps:

• Mount Meru sits at the central axis of Jambudvipa.
• Jambudvipa is the main land where humans are born and can progress on the path to liberation.
• Around Jambudvipa there are oceans (for example, the Salt Ocean) and additional concentric landmasses, forming the “Two and a Half Continents” pattern (athaā-dvīpa), with Puṣkara-dvīpa and other zones arranged outward from the center.
• The outer limit is Māṇuṣottara, the edge beyond which humans do not reside.

Note on traditions:

• The basic idea (central Meru, Jambudvipa, surrounding oceans and continents) is shared, but artistic depictions and specific labels can vary between Śvetāmbara and Digambara traditions.
• Maps often include many regional names for rivers, mountains, and towns that reflect manuscript and regional styles.

If you’d like, I can guide you to a JainKnowledge page that visually presents Jambudvīpa or explains the cosmological map in simple terms.