The Irazù volcano and its acid lake, a unique and memorable experience

The Irazù volcano is one of Costa Rica's best-known active volcanoes. It is located in the Cordillera de Talamanca, near the country's capital. It rises to an altitude of over 3,400 metres and offers spectacular views over the San José valley. The volcano last erupted in 1963. Since then, it has experienced several minor eruptions without causing any serious damage. It is one of the most visited volcanoes in the country, as it is also one of the most fascinating. The Irazú's main crater is immense, with a diameter of around 1.3 km and a depth of 300 metres. It is filled with a steaming acid lake that changes colour depending on the weather and volcanic activity. A sight as dangerous as it is magnificent.

Irazú Volcano National Park was created in 1955 to protect the region's ecosystems and natural resources. It allows visitors to discover the beauty and geological importance of the Irazù volcano as part of Costa Rica's biodiversity. The volcano park is managed by the National System for the Conservation of Protected Areas (SINAC), which is responsible for managing all the country's protected areas. Irazù Park covers an area of more than 2,300 hectares, much of which is covered by tropical rainforests and high-altitude grasslands. It is also home to a wealth of flora and fauna, many of whose endemic species are threatened. These include the resplendent quetzal and the red tree frog.

Visitors can explore the Irazù Volcano National Park by taking the hiking trails that lead through the forest and offer magnificent views of the volcano's main crater. The national park also has a museum where visitors can learn more about the volcano's geology and history.

👉 Hiking to the summit of Irazú volcano

Irazù Volcano National Park has a number of hiking trails that allow visitors to discover the spectacular natural landscapes of the region. Hikers can take the trails to reach the top of the volcano and enjoy breathtaking views of the main craters and surrounding valleys.

👉 Guided tour

For our part, we opted for a guided tour of the national park, offered by the experienced local guides at the park entrance. The guides provide information on the geology, history and flora and fauna of the area, making the visit even more rewarding. We did the same hike to the top of the volcano but were able to benefit from commentary and explanations from our guide. His English was impeccable and his generosity touching. You can book a guided tour online, with a local tourist agency or directly at the entrance to the national park.

👉 Stargazing from the volcano

If you're into astronomy, the area around the Irazù volcano is known for offering ideal conditions for stargazing. Thanks to guided tours organised by travel agencies or local guides, you can choose a night-time visit to discover the beauty of the starry sky. These tours are usually organised at night to allow clear and detailed observation of the stars. The guides provide telescopes and astronomical knowledge to make the experience even more interesting and educational.

👉Visiting the volcano by car

For the less sporty among us, it's possible to visit the national park by car or Costa Rican taxi. That way, you can enjoy this magical experience without having to walk for more than 5 minutes. You can drive up to the summit of the Irazù volcano, where there is a dedicated car park for visitors. The car park is located at an altitude of around 3,400 metres, so on a clear day you can enjoy a breathtaking view of the crater.

📍 Where is the Irazù volcano?

The Irazù volcano is located in the Cordillera de Talamanca, in the central region of Costa Rica. This region is characterised by spectacular mountain scenery and an abundance of lush tropical forests. Volcanoes are emblematic features of this region, which is known for its rich biodiversity thanks to volcanic activity.

🚌 How do I get there?

• By car or taxi: This is the easiest way to visit the Irazù volcano. From San José, the journey takes around 2 hours by car along National Route 2 towards Cartago, then continuing on Route 224 to the national park, which is very well signposted.

• By bus with the locals: If you want an authentic experience among the locals, it is also possible to take a bus from San José to Cartago. From Cartago, you need to take a second local bus to the national park. The bus leaves from calle 1-3, avenue 2, opposite the Costa Rica hotel, every day at 8am. Times and routes may vary, so it is advisable to check in advance.

• On foot: For more adventurous travellers, it is also possible to hike to the national park from San José over several days. We recommend that you contact a tourist agency to discuss the best way to proceed. This option requires a good level of fitness.

👛 How much does it cost to enter the Irazú volcano?

For non-resident adults, entry to Irazù Volcano National Park costs USD 15 per person.

⏰ Timetables for the national park

Irazù Volcano National Park is open every day from 8am to 3.30pm, including public holidays.

Termales Hacienda Orosi hot springs, relaxing in natural baths

Just an hour from the Irazù volcano, Termales Hacienda Orosi is a little treasure hidden away in the mountains of Costa Rica. Surrounded by lush green landscapes, these natural hot springs promise a relaxing and rejuvenating experience for travellers tired of hiking the volcano. With mineral-rich thermal waters and perfect temperatures, Termales Hacienda Orosi is a haven for relaxation and rejuvenation.

Entrance fees for Termales Hacienda Orosi vary depending on the day of the week and the time of day. In general, prices are between USD 25 and USD 40 per person for a day's access to the hot springs and facilities. You can book your tickets for the day, the night or even buy a package that also includes a visit to the coffee plants on the official Hacienda Orosi termales website. Nearby, you can spend the night in the Orosi Valley.