As night draws close at a cave in Indonesia, a huge swarm of bats leaves the cave at a rate of thousands every minute, spreading out over the forest and marshes to look for food.
在婆羅州加瑪洞穴，當黑夜來臨，成群蝙蝠飛離棲所，奔騰如源湧成帶的河流，平均每分鐘數千隻由洞中飛出，再分散到森林、沼澤地覓食。