1. Sonoran Desert 2. Saguaro Cactus ready to bloom 3. tiny flowers in Sonoran desert 4. Annas hummingbird nesting 5. Broad-billed hummingbird 6. Prairie dogs Sonoran Desert 7. Saguaro Cactus skeleton 8. Prickly Pear flower 9.BuckhornChollaflowering 10.eveningoverSonorandesert 11.SanXavierMission 12.SanXavierdetail 13.Sabinocanyon 14.CatalinaMountainswithOcotilloshrub 15.walkingbyalargeMesquitetreecalledtreeoflife 16.flowering Creosotebush 17.StewartObservatoryMirrorLaba 18.StewartMirrorlaboratoryTucson-NeilLindsaya 19.KittPeakSolarTelescopea 20.KittpeakSolarTelescopesketcha 21.MexicanBlueJaya 22.MarsLanderMissionTucsonwallgraffitia 23.listeningtoBoba 24.NorthernCardinaleveninglighta 25.hazyFullMoonCatalinaStateParka 26.TusconDesertLodgea 27.PhoenixBotanicalGarden-TeddyBearCactusa 28.PhoenixBotanicalgarden-Chilhulyglasssculpturea 29.Hedgehogcactusa 30.MeteorCraterFlagstaffa 31.CollaredlizardMeteorCratera 32.IndianPaintbrushMeteorCratera 33.Clark1895telescopeLowellObservatory-Flagstafaf 34.SunsetCraterVolcanoNationalMonument-Lavacinderlandscapea 35.SunsetCraterVolcanoNationalMonument-PonderosaPinesa 36.WupatkiPuebloParkdwellingsa 37.WupatkiPuebloPark-distantrangeofvolcanoesa 38.DesertLizard,WupatkiPuebloParka 39.SunsetoverTucsona 40.labyrinthdesign-experiencesandchoicesinlifea