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
Sahara Desert (ecoregion) that crosses the ecoregion is the Nile River, which originates in central Africa and empties northwards into the Mediterranean Sea. Some areas encompass vast underground aquifers resulting in oases, while other regions severely lack water reserves. The Sahara Desert features a hot desert climate (Köppen climate classification "BWh"). The Sahara Desert is one of the driest and hottest regions of the world, with a mean temperature sometimes over and the average high temperatures in summer are over for months at a time, and can even soar to . In desert rocky mountains such as the Tibesti in Libya or the