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![HARDEST ROCK [DVD]: Amazon.fr: DVD et Blu-ray](https://m.media-amazon.com/images/I/91cRMOWlFCL._AC_SY879_.jpg "HARDEST ROCK [DVD]: Amazon.fr: DVD et Blu-ray")
HARDEST ROCK [DVD]: Amazon.fr: DVD et Blu-ray
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If diamond is the hardest rock on earth (and hard by definition is solid, firm, and resistant to pressure; not easily broken, bent or pierced), and it can break with a hammer
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Surface of rocky wall with different hardnesses where the parts of the hardest rock stand out, forming slienties. Can be used as background Stock Photo - Alamy
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Adam Ondra finishes 'world's hardest climb' in Norway | CNN
