Record-Eagle/Keith King
Volunteers Mike Powers, from left, and Eirwen Moshier, 7, of Traverse City, place a mixture of mud, sawdust, wood shavings and water around empty wine bottles as Barbara McIntyre, from left in back, Sue Soderberg and Keil Moshier, all of Traverse City, stomp on the mixture with their feet as the group helps build a clay pizza oven near the Learning Circle at the Grand Traverse Area Learning Gardens. The clay mixture and the empty wine bottles will provide insulation for the floor of the oven.

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