Ijen plateau / Ijen Crater or known as "Kawah Ijen" is highly recommended to mountain buffs and hikers. The Plateau was at one time a huge active crater, 134 sq km in area. Today, Ijen is a quiet but active volcano, and the landscape is dominated by the volcanic cones of Ijen (2,368 asl) and Merapi (2,800 asl) on the northeastern edge of the Plateau, and Raung (3,332 asl) on the southwest corner.
The Bromo Tengger Semeru National Park covers a massive area of 800 square kilometres in the centre of East Java. For anyone with an interest in volcanoes, a visit to the park is a must. This is the largest volcanic region in the province. Visit the park and see the plumes of smoke coming from Mt. Semeru, an active volcano which rises 3676 meters above sea level.
Meru Betiri National Park is a large natural reserve located on the southern coast of Jember Regency in East Java. It spans across 580 square kilometers of varying topography; including sandy, coastal plains, mangrove swamps, lush rainforests, and highlands of over 1,000 meters. The Park takes its name from two mountains within its compounds: Mount Meru, measuring 500 meters above sea level, and Mount Betiri, 1,192 meters above sea level, and the highest point in the park.
Forget shopping in the fancy malls or dining in popular restaurants, go ditch the city for the raging, white waters of Probolinggo in East Java , south of Surabaya. Stunning, natural beauty and adrenaline-pumping action make for the perfect escape from the daily doldrums, not to mention providing an excuse to scream your lungs out.