Located in NW Costa Rica, Rincón de la Vieja produced a significant eruption on June 28, 2021, which triggered lahars/mudslides that threatened communities and infrastructure to the north of the volcano. This was likely the most significant eruption from Rincón de la Vieja in the last two decades and could indicate a new phase of enhanced activity. During May 9-11, 2022, a team of field engineers and gas geochemists from the Observatorio Vulcanológico y Sismológico de Costa Rica (OVSICORI) and the USGS Volcano Disaster Assistance Program (VDAP) successfully installed two Scanning DOAS on the east side of the volcano, approximately 6 km from the summit crater. The data from these instruments will help OVSICORI assess ongoing activity at the volcano and inform risk assessments.
