Welcome to DU!
The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards.
Join the community:
Create a free account
Support DU (and get rid of ads!):
Become a Star Member
Latest Breaking News
Editorials & Other Articles
General Discussion
The DU Lounge
All Forums
Issue Forums
Culture Forums
Alliance Forums
Region Forums
Support Forums
Help & Search
It seems more plausible to me that they are ceremonial/burials than housing, given the regularity of their distribution, but that's just a guess. Thanks for sharing. 
Edit history
Please sign in to view edit histories.
Recommendations
0 members have recommended this reply (displayed in chronological order):
1 replies
= new reply since forum marked as read
= new reply since forum marked as read