http://www.bbc.co.uk/blogs/thereporters/soutikbiswas/ really great sounding place. If the earth was indeed "scooped up" rather than made into bricks, then it's cob... Dean Sherwin CPE Certified Professional Estimator LEED Accredited Professional CONSTRUCTION COST MANAGEMENT 3, Cherry Street PO Box 11 Media, PA 19063-0011 (610)892 8860 fax (610) 892 7862 costman at verizon.net