Overshadowed, quite literally, by the giant stone heads on Easter Island is the Rongorongo writings, a strange and indecipherable written language found nowhere else but on the mysterious Easter Island. The writings were first discovered in 1864 by researcher Eugene Eyraud, the odd symbols seem to be an early form of writing that features symbols, called glyphs, instead of letters.
The Rongorongo writings date back to around 1200, the unique symbols were carved into wooden planks using a shark tooth. To date, no one has been able to translate the writings, but anthropologists believe they may contain religious information. What makes the Rongorongo system of writing particularly significant is that it developed organically without influence from the outside world.