Stromatolites - You might not see the resemblance, but these muddy mounds are your oldest living relatives. Sure, they are positively petrified, but bacterial stromatolites like these were some of the first beachgoers you would have encountered on a seaside holiday in the prehistoric past.
Uluru, the glowing heart in Australia’s Red Centre isn’t all it appears. It’s really quite grey on the inside and only rusty red on the outside. In fact, most of the great redness that defines the Australian Outback comes from the iron minerals that started rusting way back when the Earth’s first forests pumped up the planet’s oxygen level.
This old block of rock in the boondocks of Western Australia is older than the hills around it. Hidden inside are the oldest bits of the planet ever found: tiny zircon crystals that celebrated their first birthday 4,400,000,000 (4.4 billion) years ago.