Try ‘cracking’ this nut, intellectual monkeys keep doing it every now and then. I’m serious, this nut is called the monkey puzzle nut and rightly so. The proper name for the tree that the nut comes from is Xylocarpus granatum, but it is also known as the Patience Tree or the Cannonball Mangrove found in East Africa and Southeast Asia. The fruit can be the size of a large orange, or even bigger. The fruit can be split into pieces however putting them back to its original form in not that easy!
Via: GrandIllusions