Poza de la Arcilla: Costa Rica’s Natural Spa That You Must Visit

Poza de la Arcilla
In San Mateo de Alajuela, Costa Rica, lies the Poza de la Arcilla. Located just minutes from the center of this town, this gem surrounded by the waters of the Machuca River has become a must-see destination for those seeking to connect with nature and enjoy a unique experience.
Location and Access
Poza de la Arcilla is located in the province of Alajuela, just a few minutes from downtown San Mateo. To get there, simply locate the San Mateo church and drive 500 meters south, then 500 meters east. Access is easy for all types of vehicles, and parking is available near the river or in a nearby private parking lot, ideal for those who prefer greater security.
This place is perfect for visiting with family, friends, as a couple, or even with pets, as the venue allows companions. Admission is completely free, making it an affordable option for enjoying a different kind of day out. However, it is recommended to arrive early to secure a good spot and avoid crowds, especially on weekends.



Poza de la Arcilla: Surrounded by nature
What makes Poza de la Arcilla unique is its combination of crystal clear turquoise waters and the abundant clay that surrounds the area. This phenomenon is due to the high concentration of minerals such as iodine, iron, calcium, and magnesium, which come from both the rocky bed and the clay dissolved in the water.
- Therapeutic properties: Clay acts as a natural exfoliant, removing impurities and helping to moisturize the skin. Many visitors take advantage of this to apply mud directly to their bodies, creating their own outdoor spa treatment.
- Ideal temperature: Although the river maintains cool waters, some sources report that certain areas can reach temperatures between 36°C and 43°C, which enhances the feeling of relaxation.
Surrounded by rocks, trees, and clay-rich soil, the pool offers a peaceful and rejuvenating environment. Its waters have varying depths, making it suitable for both adults and children, although supervision is always recommended for younger children.
Recommendations for your visit
- Dress appropriately: Wear a swimsuit and comfortable clothing to facilitate mud and water bathing.
- Take care of the environment: Avoid leaving trash behind and respect the local flora and fauna.
- Pack the essentials: Consider bringing towels, drinking water, and biodegradable sunscreen.
- Make the most of your day: Combine your visit with a picnic or a hike along the nearby trails.
Why visit the Poza de la Arcilla?
Its mineral waters, the possibility of creating your own beauty treatments with clay, and free admission make it the perfect plan for any time of year.
If you are looking for an authentic, affordable experience full of wellness, the Poza de la Arcilla in San Mateo de Alajuela is undoubtedly a must-see on your list of Costa Rican destinations.
Sensorial Sunsets