Concrete logs

Log homes made from concrete logs are becoming more common as people see the advantages of being protected from wildfires and bugs; plus, these logs won't shrink and they hold paint and stain better than wood.

Companies include:

http://www.concretelogs.com aka http://www.everlogs.com/

Nitterhouse Masonry Products - Handcrafted Concrete Logs

Advantages of Concrete Log Siding - Home Remodeling Ideas at ReliableRemodeler.com