Hiking in Chile meters above sea level and points of interest include the church of Achauta, dating from the start of the 20th century; historic Aymara architecture at Kalcachu, the Cariquima River and volcano. Calama is an inland city in the Antofagasta Region in the north of Chile, lying to the south of Tarapacá. It is surrounded by the Atacama Desert and lies approximately 100 km from the popular tourist town of San Pedro de Atacama. There is currently one Sendero de Chile trail in this zone, the Pukará Lasana – Puente Del Diablo trail. This trail stretches 30 km from the pukará
Flora of the Sonoran Desert absent on the California side of the Colorado River. Desert Holly ("Atriplex hymenelytra") can tolerate even the hottest and driest sites. The area where two vegetation types border, overlap, and transition is called an ecotone. The ecotone between the hotter, drier Colorado Desert and that of the relatively cooler and wetter Arizona Upland occurs from Parker, Arizona southeast to near Phoenix, then south to Organ Pipe Cactus National Monument. Density of vegetation gradually diminishes moving from the Arizona Upland into the Colorado Desert proper. can be found with stems climbing through shrubs and other vegetation, producing "spectacular" floral displays on