I’d heard a lot about Volcan Arenal before I went to Costa Rica. It’s an active volcano in the northern part of the country that seems to be in perpetual danger of having a major eruption. At the time of my visit, people were not allowed to go on Volcan Arenal because it was too dangerous. I went on a hike to get some nice views of the volcano, but for most of the day, the top was covered in clouds. It still made for a dramatic sight though.