Mistérios do Sul do Pico follows the coast between the Mistério de São João Forest Park and Silveira. Its name recalls the word islanders used for lava flows whose origin they did not yet understand. Along the route are landscapes created by the historic 1718 eruption at Mistério de São João and the 1720 eruption at Mistério da Silveira. Lava now occupied by vegetation and rural paths still defines the terrain and the relationship between settlements and the sea.
The itinerary passes old tidal wells once used for household water, including those at Baía do Arruda, Ponta do Admoiro, Verdoso and Maré do Rego. Other landmarks include the Ponta Rasa windmill, built in 1949, small Holy Spirit chapels and São João church. Bathing areas such as Ponta do Admoiro, Arinhas and Fonte bring the walk close to the shoreline, while farm lanes and inhabited pockets show the continuity of local life across the lava fields.
The final part approaches Silveira and São Bartolomeu church. This is an easy linear trail, yet long enough to provide a broad reading of southern Pico: historic volcanism, water collected by the ocean, religious heritage and modest leisure areas follow one another in a landscape where natural processes and community memory remain closely connected.