The definition of "Pyroclastic Eruption" is: "Lateral flowage of a turbulent mixture of hot gases and unsorted pyroclastic material (volcanic fragments, crystals, ash, pumice, and glass shards) that can move at high speed (50 to 100 miles an hour.) The term also can refer to the deposit so formed."
Please click the thumbnails below to view the full sized version of the volcano photos.
To determine the current lava viewing angle you can use our Arenal volcano map. There are a number of tours in Arenal that allow for a close view of the Arenal volcano - such as the Arenal volcano national park and the 4 in one Arenal tour which includes a trip to the waterfall, volcano hike, and one of the hot springs.
