Rock carvings (petroglyphs) on Eastern Island are found on lava flow, basalt outcrops and boulders, volcanic tuff, and red scoria. Although there is evidence of erosion and loss of design elements from weathering, lichen growth, and the spalling of rock surfaces, the greatest impact is caused by man. This essay discusses problems of erosion, effects of visitors to the island, and vandalism. Significantly, a great deal of damage has resulted from various experiments and museum projects in efforts to obtain replicas for display purposes.