5 years after Sumatra quake, experts eye the next tsunami

Future disaster likely to hit area with more people

SYDNEY: A massive undersea earthquake is long overdue beneath the Mentawai islands in Indonesia and could trigger another deadly tsunami, say scientists mapping one of the world's most quake-prone zones.

Unlike the 2004 Indian Ocean tsunami, which killed around 226,000 people, this tsunami is expected to be smaller but may be very deadly as it would hit Sumatra's densely populated coast.