Tambora volcano is located on an island of Sumbawa in Nusa Tenggara, Indonesia. Crater of Tambora is magnificent in size – it has a diameter of 7 km and circumference of around 21 km. As Sumbawa doesn’t boast any famous cultural landmarks it is rarely visited by foreigners, and remote Tambora sees even fewer. This is exactly the reason why you should think about climbing Gunung Tambora instead of the very crowded and commercialized Gunung Rinjani on Lombok.
Mount Tambora is an amazing volcano on the island of Sumbawa in Indonesia. Once, Mount Tambora raised as high as 4,300 m above sea level. The eruption of 1815, the largest volcanic eruption in recorded history, killed over 100,000 people and caused a climate cooling in 1816, know as year without summer. Today, Mount Tambora stands at about 2,722 m and has a 1,100 m deep crater.
Even if name Tambora does not mean much to you, you might have learned about it during history classes. The fierce eruption of 1815 blew off the 4,300 m peak and left only a rim of 2,700 m and an 800-m crater looming below it. The eruption was the largest in recorded history and ashes from it disrupted global climate for over a year. 1816 is known as A Year Without Summer, when the worst famine of XIX century struck Europe and the US. Volcanologists rate the eruption at 7 in the Volcanic Explosivity Index. The famous eruption of Krakatoa of 1883 is rated a mere 6!
Mount Tambora is still little known with trekkers although the hike is doable for everyone and highly rewarding. It is possible to hike up to the rim, descent into the crater and/ or climb up to the summit.
When to go
Tambora can be climbed all-year, however the best time for trekking is during the dry season, i.e. June to October. November brings fresh rain to the rainforest and the trail starts to be slippery, with regular heavy afternoon showers. From what we heard December can be already very wet and January to March are the toughest months to visit. In April and May trail conditions gradually improve.
Post 1 (POS1) – 1200 m – with shelter, water available all year next to shelter
Post 2 (POS2) – 1280 m – with shelter, water available all year next to shelter
Post 3 (POS3) – 1600 m – with shelter, water available seasonally (was in mid-November), spring is 200 m away from shelter
Post 4 (POS4) – 1900 m – no shelter, no water available
Post 5 (POS5) – 2080 m – no shelter, water available seasonally (no water in mid-November), river bed 100 m away from POS5