The Tengger Caldera is a large volcanic caldera located in East Java, Indonesia. It was formed by a massive eruption approximately 800,000 years ago, which created a depression in the Earth's surface. The caldera is home to several active volcanoes, including Mount Bromo, which is one of the most famous and frequently visited. The caldera is surrounded by a unique landscape, featuring lush vegetation and a variety of wildlife. It is part of the Bromo Tengger Semeru National Park, which attracts tourists for its stunning views and cultural significance, particularly to the Tenggerese people who inhabit the region.