One of the most popular Costa Rica volcanoes in terms of tourism is going through a renewed period of activity to the delight of visitors.

A recent time-lapse video captured by a camera near the crater of the Poas was posted to the Facebook Timeline of the Observatory of Seismology and Volcanology of the National University of Costa Rica (Spanish acronym: OVSICORI). In the video, which you can watch below, the crater lake briefly bubbles up before an explosion sends volcanic debris in a large column 200 meters high.

The Poas volcano, located in the province of Alajuela, features the second largest crater in the world. Since May 2016, geologists stationed at the Poas have noticed a significant increase in activity, which includes an average of four to six eruptions per day.

Thankfully, the eruptions at this time are mainly phreatic, which means that they mostly involve groundwater and not magma. There is very little risk of pyroclastic flow at this time, which means that tourists do not have to worry about lava or extremely noxious gas exhalations.

The eruption caught on video took place at 2:27 pm yesterday. As previously reported by The Costa Rica Star, The Poas volcano has been subject to phreatic eruptions, which are unpredictable and have in the past splashed tourists standing on the observation platform near the crater. These eruptions tend to be spectacular since the sulfur pools at the bottom of the crater lake build up pressure until they reach temperatures as high as 200 degrees Celsius, at which point they eject a combination of toxic water and volcanic debris up in the air.

The Poas is still open for the enjoyment of tourists, but visitors may face evacuations when the crater lake starts bubbling.