Crater lake in winter Advanced 11/17/2013 Castaño Overa Glacier Intermediate 09/22/2013 Wulingyuan National Park Intermediate 09/09/2013 The Richat Structure Advanced 09/06/2013 Tsingy de Bemaraha Advanced 09/06/2013 Moeraki Boulders Beginner 09/03/2013 Columnar basalt Intermediate 09/03/2013 Basalt lava Intermediate 09/03/2013 Morning Glory Pool Beginner 09/03/2013 Great Blue Hole Advanced 08/30/2013