My home country, Costa Rica, is renowned for its natural beauty, lush rainforests, and incredible biodiversity. Among the wonders this small piece of paradise offers stands Poás Volcano – one of the most active and awe-inspiring volcanoes in the world.
On April 21, 2025, Poás experienced a powerful eruption that shocked not only locals but also scientists. Ash and volcanic gases rose up to four kilometers into the sky – four times the height of the Burj Khalifa, the tallest building in the world. The eruption spread volcanic ash across vast areas, including cities like Alajuela, Heredia, and even parts of the Central Valley.
Although Poás is known for frequent activity, the April 21 eruption was among the strongest in recent years, raising concerns about potential new eruptions in the coming weeks. According to experts at OVSICORI-UNA (Costa Rica’s Volcanological and Seismological Observatory), further volcanic activity remains possible.
For Costa Ricans, Poás is more than a volcano – it is a national landmark and a natural laboratory attracting scientists from around the globe. It is famous for its massive active caldera, measuring 1.3 kilometers in diameter and more than 300 meters deep, making it one of the largest active volcanic craters in the world.
At its center lies Laguna Caliente, one of the most acidic lakes on Earth, with a pH between 0.0 and 0.5. Such an extreme environment supports only highly specialized microorganisms. This unique ecosystem has drawn the attention of NASA, as studying these extremophiles helps scientists understand how life might survive on other planets, including Mars.
Poás is among the oldest and most active volcanoes on Earth. Its most significant eruption occurred in 1910, when ash covered more than 8,000 square kilometers. In 2017, strong volcanic activity led to the park’s long-term closure. Now, after years of relative calm, the volcano has reminded us of its unpredictable force.
Volcanic activity also enriches the land. Ash and minerals create fertile soil, essential for Costa Rica’s agriculture – especially coffee, one of our key exports. This volcanic soil also supports crops like fruits, vegetables, and flowers.
Following last week’s eruption, authorities declared a red alert – the highest danger level – and closed Poás National Park for visitors. Public access will remai
n restricted until conditions stabilize. Residents and tourists have been advised to take precautions against ash inhalation and to avoid areas with high concentrations of volcanic gases.
Poás is not only a hotspot for volcanology but also for ecological and astrobiological research. The acidic lagoon in its crater provides ideal conditions to study microorganisms capable of surviving extreme environments. Researchers at the University of Costa Rica (UCR) focus on these extremophiles, which may provide insight into possible life on Mars.
In 2023, Poás was recognized as one of the world’s 100 most important geological sites by the IUGS Global Geosites initiative, highlighting its scientific and ecological importance.
Costa Rica offers more than just dramatic volcanoes – it is also a place of peace and safety. Whether you seek adventure in rainforests, relaxation on Pacific beaches, or exploration of volcanic landscapes, Costa Rica has something for everyone.
If, after visiting, you decide to invest in property in my homeland, I would be happy to guide you through the process. As a Costa Rican real estate professional, I can connect you with properties perfect for both investors and those searching for a dream home.
Real estate investments in Costa Rica not only promise strong rental yields but also provide the chance to enjoy life in paradise. With growing demand for sustainable and eco-friendly living, the property market here continues to thrive.
If you want to own property in a tropical paradise while benefiting from a prosperous market, I would be glad to help you find the right opportunity. Costa Rica offers ideal conditions for living, working, and investing.
