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Ijen Crater

The Ijen volcano complex is a group of composite volcanoes located on the border between Banyuwangi Regency and Bondowoso Regency of East Java, Indonesia. It is known for its blue fire, acidic crater lake, and labour-intensive sulfur mining.

It is inside an eponymous larger caldera Ijen, which is about 20 kilometres (12 mi) wide. The Gunung Merapi stratovolcano is the highest point of that complex. The name “Gunung Merapi” means ‘mountain of fire’ in the Indonesian language; Mount Merapi in central Java and Marapi in Sumatra have the same etymology.

Ijen Geopark stretches across the entire regency which is specifically in the Mount Ijen area, Pulau Merah Beach, and Alas Purwo National Park. It has various geological, biological, and cultural sites. It became part of UNESCO Global Geoparks in 2023.

West of Gunung Merapi is the Ijen volcano, which has a one-kilometre-wide (0.62 mi) turquoise-coloured acidic crater lake. The lake is the site of a labour-intensive sulfur mining operation, in which sulfur-laden baskets are carried by hand from the crater floor. The work is paid well considering the cost of living in the area, but is very onerous.[3] Workers earn around US$13 per day and, once out of the crater, still need to carry their loads of sulfur chunks about three kilometers to the nearby Paltuding Valley to get paid.[4]

Many other post-caldera cones and craters are located within the caldera or along its rim. The largest concentration of post-caldera cones runs east–west across the southern side of the caldera. The active crater at Kawah Ijen has a diameter of 722 metres (2,369 ft) and a surface area of 0.41 square kilometres (0.16 sq mi). It is 200 metres (660 ft) deep and has a volume of 36 cubic hectometres (29,000 acre⋅ft).

The lake is recognised as the largest highly acidic crater lake in the world.[1] It is also a source for the river Banyupahit, resulting in highly acidic and metal-enriched river water which has a significant detrimental effect on the downstream river ecosystem.[5] During a scientific expedition in 2001, the pH of the lake was measured at <0.3.[6] On 14–15 July 2008, explorer George Kourounis took a small rubber boat out onto the acid lake to measure its acidity. The pH of the water at the lake’s edges was measured to be 0.5 and in the middle of the lake 0.13 due to a high concentration of sulfuric acid.

https://en.wikipedia.org/wiki/Ijen

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Tumpak Sewu Waterfalls

Tumpak Sewu, also known as Coban Sewu, is a tiered waterfall that is located between the Pronojiwo District, Lumajang Regency, and the Ampelgading District, Malang Regency, in East Java, Indonesia. The waterfall is overshadowed by Semeru, an active volcano and the highest mountain in Java. The Glidik River, which flows down Semeru, is the primary water source for the waterfall. Tumpak Sewu is loosely translated to mean “a thousand waterfalls” in the Javanese language. The name likely originated due to its appearance of many different waterfalls in one single, semi-circular area.

Tumpak Sewu is a highly-visited tourist destination, primarily on the weekends. Infrastructure built around and inside the main box canyon has allowed for easier access to the area, although the trip to enter or exit is still physically demanding and may take around an hour to complete.

https://en.wikipedia.org/wiki/Tumpak_Sewu_Waterfalls

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Bromo Tengger Semeru National Park

Bromo Tengger Semeru National Park

Bromo Tengger Semeru National Park (Indonesian: Taman Nasional Bromo Tengger Semeru; abbreviated as TNBTS) is a national park located in East Java, Indonesia, to the east of Malang and Lumajang, to the south of Pasuruan and Probolinggo, and to the southeast of Surabaya, the capital of East Java. It is the only conservation area in Indonesia that has a sand sea,[2] the Tengger Sand Sea (Indonesian: Laut Pasir Tengger), across which is the caldera of an ancient volcano (Tengger) from which four new volcanic cones have emerged. This unique feature covers a total area of 5,250 hectares at an altitude of about 2,100 meters (6,900 ft).[2] The massif also contains the highest mountain in Java,[3] Mount Semeru (3,676 meters (12,060 ft)), four lakes (including, the isolated Ranu Tompe), and 50 rivers. It is named after the Tenggerese people. The explosion of the volcano that created the caldera, happened ca. 45.000 years ago, in an event similar to the Krakatau eruption.

The Tengger Sand Sea has been protected since 1919. The Bromo Tengger Semeru National Park was declared a national park in 1982.

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Booking Online TNBTS

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Booking Online

Booking online selama 24 jam. cermati tata cara dan aturan sesuai dengan prosedur yang sudah ditetapkan, disarankan untuk booking dan pembayaran dilakukan jauh hari sebelum tanggal keberangkatan. Berdasarkan rekomendasi yang dikeluarkan oleh Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG), Masyarakat / Pengunjung / Wisatawan / Pendaki tidak memasuki area kawah dalam radius 1 km dari Kawah Gunung Bromo. (Maksimal Pura Luhur Poten).