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Speaker and Los Alamos Living Treasure Dorothy Hoard will give an illustrated talk on dendroglyphs of the Valles Caldera at 7 p.m. Wednesday at Pajarito Environmental Education Center, 3540 Orange St.
In the 19th and into the 20th century, raising sheep was a major industry in northern New Mexico. Shepherds spent May through September isolated with their flocks in highland grasslands. They recorded their presence during these lonely times by carving on aspen trunks. Lumbermen, cattlemen and even road construction workers added their names over the years.
The trees are aging now and their histories are being lost. Hoard will discuss the setting, the carvings, a volunteer survey and some of its results.
The talk is free, though donations are always appreciated.