Prehistoric Mud that goes on Sidoarjo city, could be very well used as a medicine just like in the Red Sea. It is tested laboratory contain many mineral that are fresh from the oven, of course:) just not much people swim in it or play hedgehog in it, make myself discourage to try
Think about a year it can be a new great panoramic with many health and economic benefit(it can be made as a concrete mixture) that can derived from it.
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