Altar lake - The volcano must have been very high in the past, higher then Cotopaxi, but when it blew up the top was gone and it left a big crater lake. Now filled with this mineral rich freezing glacial water it is a true sight. Around it stand the nine peaks, remainings of the old summit. Hard to see because of the low hanging clouds so this is the best picture. Also the sheer scale of it all makes it hard to capture in one photo. A very beautiful and peaceful area though and I am glad I have seen it.