The Easter Island Mystery/Spark My Curiosity

Some People might wonder why there is status dotted around Easter Island. The remote island is made up off volcanic rock and the rainwater is soaked up so easily that is can not form pools of water. Then Scientist found out that the water underground flows downhill, and at low tide, flows into the sea. The people then could hang buckets or other rain catching things over the edge of the hills and collect the water. The status are markers to show where the water is catchable.