The Montaña del Azufre Natural Monument, located in the municipality of Villa de Mazo, is a coastal volcanic site of great geological, scenic, and ecological value. Covering just 75 hectares, this protected area features a remarkable variety of natural formations, flora and fauna, and archaeological remains. Its volcanic cone and rugged terrain form one of the most unique landscapes in the southeast of La Palma.
Montaña de Azufre Natural Monument
Volcanic Origin
Montaña del Azufre is a peripheral volcanic cone of the Cumbre Vieja range, composed of lava flows and strombolian pyroclasts. The surrounding landscape includes lava fields from the 1949 San Juan eruption, coastal cliffs carved by marine erosion, and wind-shaped terrain. It is a young and evolving volcanic area.
Biodiversity
Despite its arid climate and harsh conditions, the area supports rich plant life such as sweet spurge scrubland, coastal halophyte species, retama thickets, and rock-dwelling vegetation. Notable species include verode, sweet spurge (Euphorbia balsamifera), red bejeque (Aeonium nobile), and Canary Island bugloss. Many of these species are protected under regional and European conservation laws.

Wildlife
The area is home to a variety of land and seabirds, including the Barbary falcon (Falco pelegrinoides), Cory’s shearwater (Calonectris diomedea), and hoopoe (Upupa epops), as well as reptiles like the Gallotia galloti palmae lizard. It also provides refuge for migratory birds and native insect species.
Archaeological Heritage
The area features numerous remains of ancient Benahoarite settlements, including cave dwellings, hut foundations, and shepherd shelters. Noteworthy sites include the Lava Ravine, where lava channels host traces of human use dating back to pre-Hispanic times.
Activities and Access
Though not heavily visited, the area can be reached via the SL VM 121 local trail, which connects to rural tracks and offers breathtaking views. The Azufre beach, difficult to access, and the ravines of La Lava and Salto del Pino provide a secluded encounter with La Palma’s pristine nature.
Conservation and Protection
This site is protected as a Site of Community Importance (SCI) within the Natura 2000 network. Strict conservation measures are in place to protect its biodiversity, geology, and archaeological heritage. The most fragile area is the coastal cliff, designated as a restricted-use zone.
Visiting Recommendations
- Wear proper footwear and sun protection.
- Do not leave litter or stray from marked paths.
- Avoid entering archaeological structures without a guide.
- Respect all local flora and fauna.
地址
38738 Villa de Mazo
Canarias
España
