Sumbawa Island is home to the volcano called Tambora which has an elevation of 9,348 ft. (2,850m) and a diameter at sea-level of 38 mile. On April 5th of 1815 the volcano, which had lain dormant for more than 5,000 years, began to erupt.

The mountain had been experiencing small eruptions before it exploded in 1815 and the April eruption left a deep summit caldera where the previous stratovolcano stood, causing earthquakes as far away as Surabaya (a distance of 500 km) in reaction to the collapse. Ash exploded from the eruption and was carried as far as east Java, approximately 900 km from Tambora. Thunder-like sounds were heard up to 1,400 km away and the entire eruption is estimated to have had the volcanic explosion strength of seven. The eruption column itself was roughly 44 km high vertically and produced numerous pyroclastic flows. Tsunamis were generated as a result of both the flows and the shock waves from the collapsing caldera. In total, the volcanic eruption lasted for two days and ejected about 50 cubic km of magma. The eruption was the largest that had occurred over past 1,000 years, with an immediate human impact of 92,000 deaths.

As far-reaching as the immediate outputs of the volcanic explosion were, the full effects of the eruption had yet to be felt. The year after the eruption, 1816, is often titled “the year without summer,” due to significantly cooler temperatures throughout Europe and other reaches of the world, resulting in such unusual phenomena as snow in June in the northern hemisphere and cyclone tracks being pushed to the south, bringing unusually wet weather in many areas. Crop failures and famine abounded the world over, marked by higher death rates that exceeded anything on Earth in the past 10,000 years. “The year without summer” is not a complete mystery, however, for its causes are the typical results of a large volcanic explosion, such as the Tambora eruption. There are many who would disagree with this hypothesis, claiming that the effects of a volcanic eruption the size of Tambora could not be as far-reaching or as destructive to cause “the year without summer.”

Grade: Strenuous

Opens only: May – October

Itinerary (subject to changes)

Day 1:                         Arrival Lombok

Pick up at airport then transfer to senggigi, overnight in Mascot hotel.


Day 2:             Senggigi – Dompu (BLD)

Early Morning at 6 o’clock, from Senggigi we drive to east of lombok” Labuan Lombok harbor” then cross by Ferry to Sumbawa island ” Poto Tano harbor”. Arrive in Poto Tano then continue drive to Sumbawa Besar city, stop over for lunch. After lunch we visit the “Dalam Loka” Palace, Yellow house (private museum of the King of sumbawa) then continue on to Dompu, overnight in Dompu.


Day 3:             Dompu – Pancasila (BLD)

After breakfast, we go to market for shopping of our need on mount Tambora. After lunch then continue drive to Pancasila village” in the bottom of Tambora mountain”. 4pm arrive in pancasila village then overnight in Sinar Kedindi Bungalow. In the evening we meet the porter and meeting service.


Day 4:             Pancasilla – Pos III : Trek hours ~ 10 hours (BLD)

Early Breakfast then at 6am we start trek to Pos III, we will arrive at Pos III around 4.00pm, then overnight here.

We walk through pristine real rain forest, with tremendous opportunities for viewing wildlife.

(The trail is steep ascend to pos II, in time for lunch. You are drenched with sweat, but after hearty bowl of mountain soup prepare by porters, you raring to go again. Its about 2 hrs we are in Pos III for overnight).


Day 5:             Pos III – summit Mt Tambora ~ 2850m – Sumbawa Besar (BLD)

After have a light breakfast at 04.00am, we go up to the Top of Mount Tambora (2850m a.s.l). After take a picture we go down Pos III for breakfast. After Breakfast continue to Pancasila village to have Lunch. Drive to Sumbawa Besar, and then Overnight in Tabora Hotel.


Day 6:             Sumbawa Besar – Lombok (B)

After Breakfast we drive to Lombok Island, and then Transfer to Lombok International airport for flight Singapore.


Est Price Per Person In SGD :            $ 1070

Upgrade hotel in Senggigi to 4* Hotel:   + $ 45 per person

Holiday Resort Lombok Ocean view twin room or similar hotel

Estimated airfares + taxes:  From $380 by SilkAir

(Singapore – Lombok – Singapore)

Minimum size: 4


Note: Price subject to changes without prior notice. Price quoted is based on private tour unless otherwise stated.


Price includes:

  • Pick Up / Transfer service from / to Airport
  • All Transfer as the program
  • Accommodation in hotel (standard twin) at Senggigi (Mascot/ Bukit Senggigi/ Batu Bolong Cottage or similar)
  • Accommodations in Sumbawa Island
  • Tent and sleeping bag.
  • 3 time Meals and drinks (mineral water)
  • Guide ASSISTANT during the trips.
  • Entrance fees.
  • Porters
  • Briefing prior departure
  • 15% for gears from X-boundaries


Price excludes: Travel Insurance, Personal expenses, All airfares + Airport taxes & fuel surcharge, Visa if applicable, Meals not stated, Tips to guide & driver/ local staff, Other tours not stated in itinerary, Additional expenses incurred during emergency, Porterage fees for personal bags (Rp 125000 per day per porter, max 20kg)