1. Arenal 04/2011 (BGVN 36:04)
Activity and seismicity decrease; new analysis of acid-rain
2. Irazú 04/2011 (BGVN 36:04)
Crater lake dries and regional acid-rain report
3. Merapi 05/2011 (BGVN 36:05)
Recovery; intermittent activity; damaging lahars
4. Galeras 05/2011 (BGVN 36:05)
Eruption on...