An artist's rendering of the islands of Southeast Asia, seen from above.
A topographic map of Southeast Asia. Scientists think this is where Argoland, a long-lost continental fragment, ended up.
  • A chunk of land that broke off from Australia 155 million years ago seemed to have vanished.
  • Seven years of research helped scientists trace the landmass back to Southeast Asia. 
  • It could help explain an invisible barrier across Indonesia that animals don't seem to cross. 

The continent of Argoland, which seemingly vanished after splitting from Australia 155 million years ago, has finally been discovered, according to a new study.