Tristan Clum of member station KNAU reports on documenting dendroglyphs...tree carvings...near Flagstaff, Arizona. Starting in the late 1800's, sheepherders, many of from the Basque region of ...

There are pockets of Colorado aspen groves that bear so many scribbles and drawings that the trunks look like graffiti-covered bathroom stalls. While some are made by egotists, some marks have been ...