<Tr> <Th_colspan="2"> Climbing </Th> </Tr> <Tr> <Th> Easiest route </Th> <Td> hike </Td> </Tr> <P> Turrialba Volcano is an active volcano in central Costa Rica that has been explosively eruptive in recent years including 2016 and in January, March and April 2017 . Visitors used to be able to hike down into the main crater, but increased volcanic activity in 2014 - 17, resulting in large clouds of volcanic ash, has caused the surrounding Turrialba Volcano National Park to close . </P> <P> The stratovolcano is 3,340 m (10,958 ft) high and is about 45 minutes from the Atlantic slope town of Turrialba . The summit has three craters, the largest of which has a diameter of 50 m (160 ft). Below the summit is a mountain range and montane forest, with ferns, bromeliads, lichens and mosses . Most of the forest is either primary or secondary forest . </P>

When was the last time a volcano erupted in costa rica