2004 Tidal Wave.
 

The last corpses of people killed in the tidal wave that followed the
Banda Atjeh earthquake three years ago were laid to rest today.
http://www.thefirstpost.co.uk/index....D=2&subID=1197

Their coffins are aluminium cases and their crypts concrete. The
bodies are preserved to allow forensics to gain access in case some
future need arises. They are not the only ones laid so in that
cemetery.