Mount Ijen, located in East Java, Indonesia, is a truly special place. It’s famous for its mesmerising blue flames and sulphur mining activities, making it an incredible destination for adventure travellers like you! The Ijen Crater (Kawah Ijen) is home to one of the largest acidic volcanic lakes in the world, surrounded by rugged landscapes and steep, challenging hikes. You’ll be blown away by the surreal blue flames at night or early morning, and you can even explore the fascinating work of the sulphur miners as they extract sulphur from the crater. This guide is here to help you with all the essential details you need to know about trekking routes, the best times to visit, safety tips and how to experience the breathtaking beauty and otherworldly atmosphere of Mount Ijen.