Plate tectonics Columbia or Nuna formed during a period of and broke up about . The supercontinent Rodinia is thought to have formed about 1 billion years ago and to have embodied most or all of Earth's continents, and broken up into eight continents around . The eight continents later re-assembled into another supercontinent called Pangaea; Pangaea broke up into Laurasia (which became North America and Eurasia) and Gondwana (which became the remaining continents). The Himalayas, the world's tallest mountain range, are assumed to have been formed by the collision of two major plates. Before uplift, they were covered by the Tethys
Gondwana Link this further supports the intentions of the Gondwana Link vision. The Gondwana Link project began in 2002 as an informal coalition with the purchase of Chereninup Creek Reserve and other activities. It was not until 2012 that an incorporated body was formed with the establishment of Gondwana Link Inc. Operational areas are made up of eight major zones. In the Fitz-Stirling section of 'the Link' Greening Australia, Bush Heritage Australia, Fitzgerald Biosphere Group, Carbon Neutral and other private landholders and individuals are working together to reconnect the Stirling Range and Fitzgerald River National Parks, currently separated by only 70 km