` It got dark , '' she said . Residents say the volcano spewed a lot of ash , darkened the sky . San Cristobal Volcano erupted last year , a government agency reports . 400 explosions send gas and ashes 130 kilometers into the sky . The volcano 's last known eruption was Saturday , the Smithsonian Museum of Natural History says .
Residents say the volcano spewed a lot of ash , darkened the sky . San Cristobal Volcano erupted last year , a government agency reports . 400 explosions send gas and ashes 130 kilometers into the sky . The volcano 's last known eruption was Saturday , the Smithsonian Museum of Natural History says .