Costa Ricas Poás Volcano, one of the countrys most iconic natural landmarks, has experienced a resurgence in volcanic activity, prompting authorities to implement stringent safety protocols and temporarily close the surrounding national park.
Recent Volcanic Activity
In early March 2025, the Poás Volcano began exhibiting increased seismic activity, with over 200 tremors recorded within a 24hour period on March 18. This uptick in activity was accompanied by a significant rise in sulfur dioxide emissions, reaching 691 tons per day, and a rapid decrease in the size of the volcanos acidic crater lake. citeturn0search12
On March 28, the volcano emitted ash columns reaching 200 meters above the crater, and volcanic projectiles were launched over 150 meters into the air. These events led the National Emergency Commission CNE to recommend an indefinite closure of Poás Volcano National Park to ensure public safety. citeturn0search12
Safety Measures and Park Closure
In response to the heightened volcanic activity, Costa Rican authorities have enforced several safety measures:
Park Closure: Poás Volcano National Park has been closed indefinitely to prevent potential harm to visitors.
Visitor Restrictions: Prior to the closure, access was limited to 56 visitors per shift, with a maximum stay of 20 minutes at the crater overlook. citeturn0search0
Trail Closures: The trail connecting the viewpoint with Botos Lagoon was temporarily closed.
Protective Equipment: Visitors were required to wear helmets when approaching the crater viewpoint.
Monitoring Systems: Installation of infrared cameras, gravimeters, magnetometers, and ultrasound equipment to monitor volcanic activity. citeturn0search4
Emergency Protocols: Temporary shelters and a siren system have been established to alert visitors in case of sudden eruptions.
Ongoing Monitoring and Future Outlook
The Volcanological and Seismological Observatory of Costa Rica OVSICORI, in collaboration with other agencies, continues to monitor the volcanos activity closely. Experts have noted that the current behavior of Poás is unprecedented in recent records, making it challenging to predict future eruptions. citeturn0search1
Authorities emphasize the importance of adhering to safety guidelines and staying informed through official channels. Visitors are urged to avoid unauthorized access to the park and to follow instructions from park officials and emergency personnel.
As the situation evolves, updates will be provided to ensure public safety and to inform potential visitors about the status of Poás Volcano and the national park.