What is the name of the large island due south of florida?

ANSWER:

The name of large island due south of Florida is Cuba whereas the Bahamas is in south-east of Florida.

EXPLANATION:

The official name of Cuba is "The Republic of Cuba". It is located in the 'northern Caribbean' at the meet point of Caribbean Sea, Atlantic Ocean and Gulf of Mexico.  Cuba is comprised of 'island of Cuba' as well as several other archipelagos. The capital of Cuba is Havana and it is also the largest city. The largest island in Cuba is the 'Island of Cuba'.

Magma is outside the volcano  and lava is inside the volcano. 

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