La Campana Hill, Central viewpoint in Hermosillo, Mexico

Cerro de la Campana is a rocky hill of about 319 m in central Hermosillo, just south of the centre near Parque Madero. It is bordered by Bulevar Paseo del Río Sonora to the south and Bulevar Agustín de Vildósola to the west, and Cucurpe Street climbs in a spiral to the viewpoint near the top. Paleozoic limestone and phonolite outcrops are exposed on its slopes.

In 1909, an observation point was built on the summit, making the hill a recognized gathering spot for the city. It has since remained one of the most familiar landmarks in Hermosillo.

The name comes from the hill's bell-like profile seen from east to west, and also from the phonolite rocks found here, which ring metallically when struck. The summit was declared a Civic Monument in honour of the railway engineer Jesús García Corona, the Hero of Nacozari, though the planned memorial was never built.

The climb starts from Cucurpe Street, and you can choose from several routes up to the top. Going early in the morning or late in the afternoon is more comfortable, especially during the hot summer months.

Phonolite is a rare volcanic rock known for its metallic ring, and outcrops within a city are uncommon anywhere in the world. The hill sits directly within the urban fabric of Hermosillo, making this geological feature easy to reach for any visitor.