​Irazú Volcano National Park was created by Law No. 1917 of July 30, 1955, published in Official newspaper La Gaceta 175 of August 9 of that year. Later the park was expanded by Executive Decree No. 26945-MINAE of August 22nd 1988, for having a current area of 2000 ha.

Records of the eruptive activity of the volcano date back to 1723 when a strong eruption occurred, according to documented records by Diego de la Haya Fernandez, Governor of the Province of Cartago at the time. During

the nineteenth century the volcano fumaroles presented several periods of activity described by foreigners traveling in the country.

In 1963, a buildup of volcanic materials in the bed of Reventado River caused an avalanche that destroyed about 300 houses in Taras de Cartago City.

In 1994 a sudden explosion occurred on the north wall of the main crater producing an avalanche that slipped into the bed of Rio Sucio River, reaching beyond the bridge over the same river, located in the Braulio Carrillo highway. Since then, the volcano has only presented fumaroles on the north wall of the main crater.

• ¢ 1000 13+ national and resident visitors.
• ¢ 500 national and resident children (2 to 12 years old).
• $ 15 non-residents visitors over 13 years old.
• $ 5 non-residents children (2 to 12 years old).
• ¢ 500 domestic visitors and residents of primary and secondary education institutions, educational tours organized by schools that have been previously coordinated with the Administration of protected wilderness area.
• Students of higher education must cancel the fare for domestic or non-resident visitors, over 13 years old.
• Children under 2 years of age, as well as national residents and visitors older than 65 years, do not pay the entrance.

• ​Wear comfortable clothing and closed shoes for hiking. On sunny days hat and sunscreen is required; in cloudy and rainy days, coats and capes.
• Being a zone of volcanic activity, it is important to address regulations given by park guards to protect your physical integrity in the event of an emergency.
• Note that during peak visitation days, you will probably have to also stand in line to use the restroom.
• Weather conditions at the top of Irazú Volcano are changing, so there is not always certain that you will see the craters. Ask about weather conditions before your visit it. For obvious reasons, it is not possible to refund the ticket paid price.
• At lunch areas you must take care of raccoons and coatis (pizotes) that could be trying to "steal" your food.