Sand Caves 0 ▲ roka 47 minutes ago · Nature · hide Near Blankenburg there are these ancient sand caves were people used to live in, long long ago. We didn't expect anything like this. Never heard about them before which made us astound even more. Commenting on Bubbles has been removed. Why? If you want to talk about this post, write to the author, use the comments on their blog if it has them, or reply with a "RE:" post on your own blog. Suggestions? feedback@bubbles.town