Caldeira Velha
Caldeira Velha is a lush, fern-draped thermal monument located on the slopes of the Fogo Volcano. It features a series of iron-rich hot springs and a picturesque waterfall set within a protected natural park.
An essential, albeit highly popular, immersion into the volcanic heart of São Miguel.

Why go
The site offers a magical, jungle-like atmosphere where you can bathe in naturally heated, orange-tinted pools surrounded by towering tree ferns and volcanic rock. The contrast between the cool mountain air and the mineral-rich geothermal waters creates a restorative, otherworldly bathing experience unique to the Azores.
Why you might skip it
Travelers seeking a remote, solitary wilderness experience will be disappointed by the crowds, particularly during the cruise ship season. If you are sensitive to the strong smell of sulfur or prefer clear, non-opaque water for swimming, this may not be your ideal destination.
What to do
Rotate between the various thermal pools, ranging from tepid to hot, and take the short, well-marked trail to view the impressive waterfall. The site also includes an interpretive center that explains the volcanic geology of the Fogo area.
History & origin
Part of the Natural Monument of Caldeira Velha, this area is a protected geothermal field created by the volcanic activity of the Fogo massif. The site has been developed carefully to preserve the unique flora, including the prehistoric-looking Dicksonia fibrosa ferns.
Getting there & around
Located off the regional road EN5-2A leading to Lagoa do Fogo; look for the clearly marked entrance and the dedicated parking area adjacent to the road.
The site is compact and navigated via a series of stone paths and wooden walkways that connect the changing rooms, pools, and the waterfall trail.
Common planning mistakes
Visitors often arrive without a pre-booked entry slot, only to be turned away due to strict daily capacity limits. Another mistake is wearing expensive or light-colored swimwear, as the iron-rich water can permanently stain fabrics.
Less ideal for
Those seeking total solitude or travelers with limited mobility who struggle with uneven, slightly slippery park paths.
Practical notes
Bring a towel and dark-colored swimwear, as the thermal water leaves iron deposits. Lockers and outdoor showers are available on-site, and the high humidity means your clothes may take longer to dry.
Where it sits





