That quake and subsequent tsunami killed 22,000 people and caused $300 billion in damage. Now, experts warn this could happen again but in a different part of the world.
Researchers have identified a hidden fault beneath Bangladesh and parts of east India and Myanmar.
New GPS data indicates a megaquake — an earthquake with a magnitude 8.2 to 9.0 — could strike the region.
An earthquake that strong would be incredibly devastating. According to Live Science, "researchers estimate about 140 million people live within 60 miles of the fault."
Most of those people are in the eastern outskirts of Dhaka, Bangladesh. It wasn't long ago that the World Bank labeled Dhaka the fastest-growing city in the world. The problem is, the rapid development needed to keep up with growth isn't necessarily safe.
One of the researchers told Live Science: "I've seen them pumping sand to build up the ground level to build a 20-story building. If there’s an earthquake, [that ground is] going to liquefy and the building is just going to fall over."