On a peninsula separated from the mainland by islands, the old part of the town is known as Fort Cochin, where Vasco da Gama set up Portugal's first Indian trading station.
Fort Cochin lies on an island that is inaccessible from the mainland.  
mnli hypothesis: Fort Cochin lies on an island that is inaccessible from the mainland.   premise: On a peninsula separated from the mainland by islands, the old part of the town is known as Fort Cochin, where Vasco da Gama set up Portugal's first Indian trading station.