BackgroundVolcán San Pedro is the oldest of three 3000-m-high stratovolcanoes constructed within the roughly 85,000-year-old Atitlán III caldera. The 3020-m-high San Pedro forms a forested cone that rises above the SW side of scenic Lake Atitlán. Santiago bay, a narrow 8-km-long inlet of Lake Atitlán, separates the eastern flank of San Pedro volcano from the slopes of Volcán Tolimán. The shallow summit crater of San Pedro is breached to the NW and partially filled by a low mound of lava. Two cinder cones were constructed on the floor of the moat between San Pedro and the SW wall of Atitlán caldera. The age of the most recent activity of San Pedro is unknown, although the volcano is more vegetated and erosionally modified than the twin volcanoes of Tolimán and Atitlán and does not display evidence of fumarolic activity.
Source: Smithsonian / GVP volcano information
San Pedro Photos
See also: Sentinel hub | Landsat 8