BackgroundLaguna Poco Sol is a 200-m-wide, lake-filled depression that lies near the southern end of a volcanic lineament extending northward to Arenal volcano. The lake has been interpreted as a phreatic explosion crater or possibly a depression associated with a landslide. Lava flows, lahar deposits, tuffs, and volcanic breccias are found near the lake. Thermal activity at the lake and near the Río Penas Blancas includes mud pots, hot springs, and sulfur deposition.
Source: Smithsonian / GVP volcano information
See also: Sentinel hub | Landsat 8 | NASA FIRMS