Giant's Causeway basalt columns sunset, Northern Ireland
© joe daniel price/Moment/Getty Images
If you're a geometry buff looking for a break outdoors, we've found the place for you. Here at the Giant's Causeway, you'll find not only a great abundance of hexagons, but squares, octagons, pentagons and even a handful of heptagons. Numbering around 40,000 and arranged in tumbling terraces, the Causeway's polygonal shapes showcase the signature columnar jointing of some types of igneous rock—in this case basalt. As lava flows cooled to form this rocky coast 60 million years ago, stress fractures followed the shortest distance between two points to create tight, uniform shapes. It's a pattern found all over the world, but this Northern Ireland landmark is probably the best-known example, drawing about a million visitors a year.
雾霾中的“高峰”
荒地上的美好时光
天然“教堂”
这难道是天外来客的座椅？
被一分为二的城市
没那么烂
一组奇怪的石头
沙漠还是甜点？
