A marauding herd of elephants is devouring standing ahu crops, the only means of livelihood for the flood-hit farmers of Majuli, giving the residents of the river island no other option than to witness the devastation in silence. Sources said that the elephants have been wreaking havoc in the saporis (sandbanks) in Phulonibari, Meragar, Salmara, Kathalkhua, Kathamia and Bonoria areas since the last couple of days.