This happens when the temperature hits 13 degrees Celsius (55°F) in IcelandJul 2013 ⋅ gogo1221 ⋅ r/pics ⋅ #13 #55
The black, rocky beaches of Surtsey - Earth's youngest island located 20 miles south of IcelandJul 2013 ⋅ gogo1221 ⋅ r/pics ⋅ #20