Plizio Visual Lab

Tarso Voon

Plizio editorial teamUpdated: Jun 2026Data Sources

Mountain

Weather…

Tarso Voon is a massive volcanic highland in the central Tibesti Mountains of northern Chad, reaching an altitude of approximately 3,100 meters. The most striking feature of this volcano is its enormous summit caldera, measuring roughly 14 by 18 kilometers, formed by a prehistoric structural collapse following immense eruptions. The floor of the caldera is relatively level, covered by quaternary lava flows and various pyroclastic deposits. Tarso Voon is internationally recognized for the Soborom geothermal field on its western flank, where hot springs, mud pots, and fumaroles provide evidence of ongoing magmatic activity beneath the surface. These thermal springs have been used for centuries by the local Tubu nomads for their medicinal properties. The rugged beauty of the terrain, characterized by deep ravines and steep crater walls, makes it one of the most geologically fascinating sites in the Sahara. Vegetation is sparse, consisting mainly of hardy grasses and shrubs that cling to the sheltered areas within the caldera.

Location: Chad
Nearby: Fada (77 km)

Best time to visit & climate

The most pleasant time to visit is Feb, Nov, Dec.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg °C	18	22	25	30	32	33	32	31	31	28	23	19
Rain mm	0	0	0	0	1	1	10	32	7	0	0	0

📋 Practical info

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Getting there

The Tarso Voon massif is extremely isolated and can only be reached with specialized off-road vehicles via informal desert routes. Careful planning of fuel logistics is necessary, as there are no refueling opportunities on the way to the crater area.

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Best season

The winter months offer the best conditions for a hike on the edge of the vast caldera, thanks to the cooler temperatures. In summer, conditions are often unbearable due to extreme heat and intense solar radiation at high altitudes.

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Terrain & paths

The terrain around the volcano is steep and often covered with loose ash or sharp volcanic rock, making the climb difficult. Exploring the wide caldera requires experience in mountain hiking and high endurance in the thinner mountain air.

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What to bring

High-quality hiking boots with good grip and layered clothing are important to cope with the temperature differences between day and night. Bring adequate sun protection and high-quality sleeping bags for the cold nights in the high mountains.

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Parking

There are no regulated parking lots; vehicles are usually left at the base of the massif in sheltered spots. It is important to keep vehicles together and choose stopping places that are protected from possible rockfalls or drifting sand.

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Safety

Volcanic gases can escape in the caldera, so caution is advised and long stays in low depressions should be avoided. However, the greatest danger remains dehydration and the impossibility of quick medical help in this desolate wilderness.

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Time needed

For a complete exploration of the volcanic massif and the interior of the crater, travelers should plan for at least five to seven days. This time includes the ascent and several days for hikes along the caldera rim and in the center of the volcano.