They lie in shallow sea side lagoons and if you watch carefully you might see a small bubble of the stuff, bubble to the surface. Really electrifying. Then I walked up a mound to a look out point where you see to the horizon over endless thorny scrub and I thought WHY !!!
Why on earth didn't the first explorers not get straight back in their ship, say bugger that and set sail for Tahiti.
What on earth ever possessed them to stay and now Leon old mate you are paying the price.
(Well alright, apart from the iron ore).