natural bridges national monument with sipapu bridge at armstrong canyon, southwest desert, utah

america american arch arches arid armstrong blue bridge bridges canyon cliff climb climbing clouds deer desert destination dramatic environment erosion evening hike hiking imposing kachina landmark landscape largest last late light monument national natural nature north outdoor outdoors overlook park path remote rim river road rock rocky sandstone sheer shines shining sipapu south southern southwest southwestern states stone summer sun sunset sunshine three trail travel trees united usa utah vegetation viewed wash west western wild wilderness