A hibiscus flower is seen on an ash-covered plant at Mardingding village in Karo district, Indonesia's north Sumatra province November 19, 2013. The volcano continued to emit volcanic ash on Monday, throwing an 8,000m (26,247 ft)-high plume into the atmosphere, as thousands of residents fearful of more eruptions remained in temporary shelters, according to local media. REUTERS/Roni Bintang (INDONESIA - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) FOR BEST QUALITY IMAGE SEE GF2EA3O0A9U01