Arborglyphs are tree carvings made in the bark of aspen trees by Basque sheepherders throughout North Eastern Nevada. Like the sheepherders who carved them, the arborglyphs are vanishing from Northern Nevada, as the trees succumb to the ravages of time, fires, development, vandals, disease, insects, and old age. You could take a whole day searching for the oldest carving or just photographing them as they are disappearing. Please note: It is illegal to carve on aspen trees on the national forests and grasslands!