Can anyone identify the tank(?) pictured here?

The pic is a screen cap from the BBC news service, from "World-Philippines marine general removed" clip. (it won't be there for long)

It looks massive! Is it a tank? or some other vehicle?

I'd like to get reference pics of it, but I don't know what to google for..

Edited to add.. Cheers, Diolma :-))

Message edited on: 02/26/2006 17:46