3-billion-year-old zircon crystals point to a "Lost continent" found under Mauritius. Lava-covered piece of continent is an ancient remnant, left over from the break-up of the supercontinent, Gondwana, which started about 200 million years ago.

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3-billion-year-old zircon crystals point to a "Lost continent" found under Mauritius. Lava-covered piece of continent is an ancient remnant, left over from the break-up of the supercontinent, Gondwana, which started about 200 million years ago.