Answer:
The Ivatans are a Filipino ethnolinguistic group predominant in the islands of Batanes of the Philippines. Their ethnogenesis is unclear; their origins remain untraced among scholars, but they are believed to be an Austronesian group, related to neighboring Ilocanos on purely linguistic basis.
The culture of the Ivatans is partly influenced by the environmental condition of Batanes. Unlike the old-type nipa huts common in the Philippines, Ivatans have adopted their now-famous stone houses made of coral and limestone, designed to protect against the hostile climate.
