There are two ways to leave Surabaya to go to Yizhen Volcano: one is to go to the west of Bondowoso; the other is to go to the east of Banyuwangi. The former road conditions are slightly better. If you charter a car directly to Yizhen Volcano at Wendo Rousuo Bus Station or the Wainan Dream Ferry, you will go to Yizhen Volcano about 500k/. If you choose public transportation, you can transfer to the bus to Sempol at Wenduo Roussuo Bus Station. The fare is 20k/ people. After arriving at Senpo, you can rent a motorcycle to the Izhen volcano, 120k Indonesian rupiah/car. Going to Yizhen volcano is to see the ghost blue fire of the volcano. The opening time of the volcano is 2:30 in the morning. This hiking trip requires a normal speed of 1 and a half to 2 hours. It is nearly 4:30 when it reaches the volcanic lake, and the peak period of the blue fire is in this period. After 5:00, the day will become brighter, and the blue light is difficult to see. This means you have to maintain a relatively uniform speed to climb the mountain, otherwise you miss the best time. Mount Ijin Mountaineering license: 150k IDR/person. There is only one road up the mountain and it is all ash, very rugged, it is recommended to wear hiking shoes and wear a anti-virus mask. There will be local guides to lead, the guide will also help you take pictures, so it is best to give some tips. After dawn, you will see the blue volcanic lake. The bubbles of sulfur gas keep coming out of the lake. It is said that the pH of the lake is very low. Don't touch it at will. Young miners have been carrying sulfur raw ore here for a long time, a swath of sulfur ore has 60kg weight, and a swath of sulfur can only earn about 30 yuan, life is very difficult. When taking pictures of them, they will ask you for fees and will directly sell you sulfur ore (prices vary according to size).