This is Obsidian, a naturally occurring volcanic glass
It forms when lava, rich in silica, cools so rapidly on contact with air or water, that atoms are unable to arrange themselves into a crystalline structure
📹 Outlaw Rocks
Everyone we've encountered in Germany has been really friendly. When we told our waiter we were american he said he had visited america but it was New York on 9/11 and he was lucky to make it out alive, and to enjoy our meal
people tell you to read for “half an hour before bed” but don’t mention the slippery slope that ends with you starting another chapter at 4:30 AM while stressfully glancing at your clock