Morro Solar, Summit in Chorrillos district, Lima, Peru

Morro Solar is a cluster of hills in Chorrillos, Lima, rising about 251 metres, with Cerro Marcavilca as its highest point. Its lower slopes are built over with tightly packed structures, while the bare reddish-brown and gray upper mass carries a row of thin masts along the ridge. A single white tower stands on the left slope, and a small cluster of pale buildings sits on a mid-level shelf near the right side.

Named after the encomendero Antonio del Solar, the hill became the scene of the Battle of San Juan and Chorrillos in January 1881, during the War of the Pacific, with fighting on its summit and slopes before Chilean troops burned the Chorrillos resort. Uniforms and weapons of both sides have been found there, and the battlefield area was declared a Historical Intangible Zone in 1986.

The name comes from Antonio del Solar, the Spanish encomendero granted the land in the viceroyalty; it was first called Morro del Solar. Near the planetarium stands the Cruz del Papa, built in 1988 from high-tension towers toppled by terrorists and lit at night for Pope John Paul II's second visit.

The hill has several hiking trails and is also accessible for cyclists, though reaching the summit requires good stamina. It is best to visit early in the day, as afternoon heat can be intense.

The wild potato species Solanum neoweberbaueri was named in 1914 by Ludwig Wittmack, based on a specimen Augusto Weberbauer collected on Morro Solar. The hill's rocks also hold silver: a vein reported in 2008 was said to contain 53 million ounces of silver resources.