fs1858ybr palatki grotto panel 21 dstretch ybr - 3d model fofsedona 2379a08 small portion complex series possible archaic pictographs superpositioning over possibly older pre-archaic superimposed later sinagua apache imagery uses same input photographs used fs1858 but they have been processed algorithm enhance color variations determining types paint superposition part ongoing project evaluate younger petroglyph scratching additional information red rock district coconino forest can found following web sites http wwwsedonaredrocktrailsorg wwwfsusdagov recmain recreation volunteer opportunities including creation models other projects wwwfriendsoftheforestsedonaorg