Semeru, or Mount Semeru (Indonesian: Gunung Semeru), is an active volcano located in East Java, Indonesia. It is the highest mountain on the island of Java. This stratovolcano is also known as Mahameru, meaning 'The Great Mountain. The name derived from the Hindu-Buddhist mythical mountain of Meru or Sumeru, the abode of gods.

Geology
Known also as Mahameru (The Great Mountain), it is very steep rising abruptly above the coastal plains of eastern Java. Maars containing crater lakes have formed along a line through the summit of the volcano. It was formed south of the overlapping Ajek-ajek and Jambagan calderas. Semeru lies at the south end of the Tengger Volcanic Complex.

Eruptive history
Semeru's eruptive history is extensive. Since 1818, at least 55 eruptions have been recorded (10 of which resulted in fatalities) consisting of both lava flows and pyroclastic flows. All historical eruptions have had a VEI of 2 or 3.

Semeru has been in a state of near-constant eruption from 1967 to the present. At times, small eruptions happen every 20 minutes or so.

Semeru is regularly climbed by tourists, usually starting from the village of Ranu Pane to the north, but though non-technical it can be dangerous. Soe Hok Gie, an Indonesian political activist of the 1960s died in 1969 from inhaling poisonous gases while hiking on Mount Semeru.

Mount Bromo
Mount Bromo (Indonesian: Gunung Bromo), is an active volcano and part of the Tengger massif, in East Java, Indonesia. At 2,329 metres (7,641 ft) it is not the highest peak of the massif, but is the most well known. The massif area is one of the most visited tourist attractions in East Java, Indonesia. The volcano belongs to the Bromo Tengger Semeru National Park. The name of Bromo derived from Javanese pronunciation of Brahma, the Hindu creator god.
Sulfur is collected from inside the caldera by workers. Mount Bromo sits in the middle of a vast plain called the "Sea of Sand" (Javanese: Segara Wedi or Indonesian: Lautan Pasir), a protected nature reserve since 1919. The typical way to visit Mount Bromo is from the nearby mountain village of Cemoro Lawang. From there it is possible to walk to the volcano in about 45 minutes, but it is also possible to take an organised jeep tour, which includes a stop at the viewpoint on Mount Penanjakan (2,770 m or 9,088 ft) (Indonesian: Gunung Penanjakan).

The viewpoint on Mount Penanjakan can also be reached on foot in about two hours. Depending on the degree of volcanic activity, the Indonesian Centre for Volcanology and Disaster Hazard Mitigation sometimes issues warnings against visiting Mount Bromo.

Culture
On the fourteenth day of the Hindu festival of Yadnya Kasada, the Tenggerese people of Probolinggo, East Java, travel up the mountain in order to make offerings of fruit, rice, vegetables, flowers and sacrifices of livestock to the mountain gods by throwing them into the caldera of the volcano. The origin of the ritual lies in the 15th century legend where a princess named Roro Anteng started the principality of Tengger with her husband, Joko Seger. The couple were childless and therefore beseeched the assistance of the mountain gods. The gods granted them 24 children but stipulated that the 25th child, named Kesuma, must be thrown into the volcano as a human sacrifice. The gods' request was implemented. The tradition of throwing sacrifices into the volcano to appease these ancient deities continues today and is called the Yadnya Kasada ceremony. Though fraught with danger, some locals risk climbing down into the crater in an attempt to recollect the sacrificed goods that they believe could bring them good luck. On the Segara Wedi sand plain sits a Hindu temple called Pura Luhur Poten.

The temple holds a significant importance to the Tenggerese scattered across the mountain villages, such as Ngadisari, Wonokitri, Ngadas, Argosari, Ranu Prani, Ledok Ombo and Wonokerso. The temple organises the annual Yadnya Kasada ceremony which lasts for about one month. On the 14th day, the Tenggerese congregate at Pura Luhur Poten to ask for blessings from Ida Sang Hyang Widi Wasa and the God of Mahameru (Mount Semeru). Then the crowd proceeds along the crater edges of Mt Bromo where offerings are thrown into the crater. The major difference between this temple and Balinese ones are the type of stones and building materials.

Pura Luhur Poten uses natural black stones from volcanoes nearby, while Balinese temples are mostly made from red bricks. Inside this pura, there are several buildings and enclosures aligned in a mandala zone composition.

Duration: 04 Days / 03 Nights
Start / Finish : Surabaya airport
Grade: Moderate – Challenging
Best Climbing Season : May – December every year

Itinerary:
DAY 01: ARRIVAL SURABAYA AIRPORT – MALANG
Upon arrival at Surabaya Airport (02.00 pm) you will transfer directly to Malang. Stay Overnight at the Hotel. Dinner will be at local restaurant by personal expenses.

DAY 02: MALANG – RANUPANE – RANU KUMBOLO LAKE – KALIMATI CAMPSITE
Early Morning (06.00 am) After breakfast, leaving Hotel and proceed to Ranupani village as the entrance gate of Mt. Semeru National Park. After check your climb permit, and short brief from our guide and national park ranger, You will start to climb mount Semeru. The first part is trekking to Ranu Kumbolo lake (4 hrs trekking), here you will enjoy your lunch box while viewing a beautifull landscape of one of the highest Lakes in Indonesia. Afterwards, proceed to Kalimati summit camp. It will takes for about 2-3 hours walk encounter the beautiful landscape of volcanic lake, open huge meadow and pine forestry. Overnight in dome tent. Dinner will be cook and srve by our guide and porters team. (B,L,D).

DAY 03: KALIMATI CAMPSITE – SUMMIT SEMERU – RANU PANE VILLAGE – BROMO HOTEL
Early morning (at 02.00am) after having a cup of hot drinks and some light breakfast, you will start attempt to the summit of Mount Semeru (3,676 M). By walking on the sandy and stony path for about 3 – 4 hours walking. After take picture of beautiful sunrise and his magnificent of the bomb eruption (which every 15 minutes blowing up), Descend walking down to the basecamp for have breakfast and return trekking to Ranu Pane village. After reaching Ranupani Village, preparing your luggage to proceed driving by 4×4 jeep to Hotel at Bromo area, through the sea sand. Lunch will be at Ranukumbolo. Dinner will be at local restaurant by your personal expenses (B,L,D).

DAY 04:BROMO HOTEL – MOUNT PANANJAKAN – MOUNT BROMO – SURABAYA
Early morning call (3.00 am) for ride with 4WD Jeep to Mt. Pananjakan (2,770 M asl) for a spectacular view of sun rise over Mt. Bromo and it’s sea of sand. Trekking up to the rim of Mt. Bromo’s. Afterward, continue driving back to the Hotel to have a breakfast. Then, after taking shower, hotel check out, and proceed drive back to Surabaya Airport to catch your evening return flight (B).

End of Services.

Rate : USD 475/person, Twin share, Minimum 2 person

INCLUDED:
* 1 night stay in a Hotel at Malang area based on twin share. (1st night)
* 1 night stay in a Hotel at Bromo Area based on twin share. (basic facilities)
* 1 night stay in a dome tent at Kalimati campsite at Semeru.
* 4 WD jeep to Mt. Pananjakan (Bromo Sunrise) and Bromo Crater.
* English speaking mountain guide
* Mountain porters to carry our logistic, water and group equipments (tents, stove, etc)
* Meals as mentioned on above itinerary
* All entrance fee and climbing permits
* Mineral water and snack during trekking
* All transfer services in/out to Airport/Hotel * Dome tent for stay camp during trekking based on twin share
* Meals during trekking (as mention on the itinerary)

EXCLUDED:
* Meals as unmentioned on above itinerary
* Tours and service as unmentioned on above itinerary
* Personal expenses such as laundry, minibar, room phone, etc
* Tips for Guide  and porter
* Personal Porter to carry your personal bag
* Horse riding to Bromo caldera.

WHAT TO BRING :
* Headlamp
* Trekking shoes
* Raincoat
* Windbreaker / Jacket
* Spare socks, clothes
* Trekking pole (optional)

Airport destination :
JUANDA International Airport at SURABAYA (SUB), East Java, INDONESIA