Scott P
01-07-2014, 07:38 PM
Apparently more than was previously thought.
http://news.nationalgeographic.com/news/2014/01/140105-lightning-mountains-south-africa-drakensberg-mountains-geology/?utm_source=Facebook&utm_medium=Social&utm_content=link_fb20140107news-lightmou&utm_campaign=Content
http://news.nationalgeographic.com/news/2014/01/140105-lightning-mountains-south-africa-drakensberg-mountains-geology/?utm_source=Facebook&utm_medium=Social&utm_content=link_fb20140107news-lightmou&utm_campaign=Content