<br /> <p>Large plumes of smoke and ash filled the Indonesian sky as Mount Semeru, in East Java, erupted on August 14. Standing 12,057 feet tall, Semeru is the tallest – and one of the most active – volcanoes on Java Island. Since 1967, Semeru has been in an almost constant state of eruption, according to the global volcanism program</a> run by the Smithsonian Institution.</p><p>Travel vlogger Ryan Purvis caught the dramatic eruption on camera, seen in this video from several angles. Credit: YouTube/Ryan Purvis</p><br />
