The driver and guide will pick traveler up at the hotel at 12.30 am then driving to Ijen area about 1,5hrs. Hiking begins at 02.00am and arrive on the top at 03.30 am. Witness the biggest acidic lake on earth on Java with its beauty turquoise color. See the phenomenon of blue fire on the crater floor in the dark and meet sulfur miner who awarded as a strong man worker along the way hiking the mountain.