[00:00.695]Before long, each clan was trying to carve larger,grander figures [00:04.941]than those of their neighbours - competition that was to be their undoing. [00:15.317]Vast quantities of wood were used to transport the stone statues, [00:20.289]and slowly but surely, [00:21.618]the Rapa Nui used up their island's precious resources. [00:26.355]Eventually, [00:27.307]their civilisation descended into chaos and warfare. [00:31.260]Clan fought against clan, [00:33.392]with disastrous consequences. [00:55.145]By the time of their ultimate collapse, [00:57.353]the Rapa Nui had changed their island beyond recognition. [01:08.045]These are the hills where the giant palm forest once stood. [01:12.708]And these are the cliffs that once rang to the sound of those huge seabird colonies, [01:17.664]all hunted to extinction by the Rapa Nui. [01:24.177]Today, the giant stone statues are a poignant reminder of the precarious nature of life on remote islands.