Location and surroundings
Dena belongs to the chain Western Asia > Iranian Plateau > Zagros Mountains > South Central Zagros > Dena. It is in Iran, in Kohgiluyeh and Buyer Ahmad Province, within Dena County and Dena district. By elevation it is the highest of the 246 named peaks in the range, and it is also the high point of the range itself. The summit area is part of Dena National Park.
The mountain is a high limestone massif with steep ridges, alpine slopes and broad high ground around the crest. Lower slopes in this part of the Zagros support scrub, woodland and pasture, while the upper mountain is colder, rockier and more exposed. The terrain is typical of a large Iranian high mountain: long approaches, strong weather changes and snow cover for much of the year.
Neighbouring peaks
- Seh Qolleh — 4,313 m, 0.6 km south
- Kamar-e Qebleh — 4,185 m, 1.1 km northeast
- Heram — 4,330 m, 1.6 km southeast
- Ghezel — 4,379 m, 1.6 km southeast
- Morgol — 4,407 m, 1.7 km northwest
- Seh Ghope Asemani — 4,392 m, 2.1 km southeast
- Kūh-e Ghār Keykhosrow — 3,435 m, 2.7 km northeast
- Kapiri — 4,223 m, 3.4 km southeast
These nearby summits show how crowded the high crest of Dena is with major peaks. Morgol is only slightly lower than Dena, while Ghezel and Seh Ghope Asemani are also close in height. The nearest lower peaks and saddles are all within a few kilometres, so the summit sits in a compact high alpine cluster rather than standing alone.
The view from the summit
The highest peaks within 25 km include Qolleh-ye Denā at 4,314 m, 6.4 km to the southeast; Pootak at 4,258 m, 5.9 km to the northwest; Tale Gardal at 4,218 m, 2.7 km to the northwest; Qalat-e Bozi at 4,202 m, 8.5 km to the northwest; Kūh-e Damā at 4,192 m, 18.9 km to the southeast; and Kūh-e Dīnār at 4,182 m, 13.9 km to the northwest.
From the top, the skyline is dominated by other high Zagros summits rather than low foothills. On a clear day, the view is a sequence of ridges, broken limestone slopes and neighbouring peaks of similar height. Because many of the surrounding mountains are themselves above 4,000 metres, the summit panorama is broad but tightly packed.
The range
Dena is the highest peak in the Dena range, which is a sub-range of the Zagros Mountains in western Iran. The range is about 80 km long and 15 km wide on average, and it has more than 40 peaks above 4,000 metres. It lies in Iran and spans the boundary area of several provinces in the wider massif.
Within that range, Dena ranks first by elevation and serves as the high point of the whole chain. The massif is known for its concentration of high summits, so Dena is not an isolated peak but the top of a long alpine ridge system in the South Central Zagros.
Climate and weather
These are estimates from NASA POWER climate data adjusted to summit height. At the summit, the warmest month is July at about 11 °C, and the coldest is January at about -6 °C. Mean temperatures are above freezing from May to October. Around the mountain, annual precipitation is about 400 mm, with the wettest month in December at about 85 mm and the driest in June at about 0 mm.
Weather hazards in this part of the Zagros include rapid cloud build-up, fog, strong wind on exposed ridges, snow in the cold season and icy ground after storms. Even in summer, nights at high altitude can be cold, and snow patches may remain on the upper mountain. Winter conditions are severe and can keep the crest snow-covered for long periods.
Best time to visit
The most practical climbing window is usually the period when summit temperatures are above freezing, from May through October. Within that span, late spring, summer and early autumn are the most workable months for a climb, with longer daylight and less snow on the upper slopes. June is the driest month, but it can still be hot and very dry lower down.
Winter and early spring are a different mountain entirely: snow, ice and poor visibility can make travel slow and serious. For most visitors, the best time is when the upper mountain is clear enough for safe movement but before autumn storms and early snow return.
Nature and wildlife
Dena National Park protects a mountain landscape of limestone ridges, high meadows, rocky slopes and seasonal streams. The lower and middle elevations support oak-dominated vegetation, with pistachio and almond appearing lower down, while higher ground becomes more open and alpine. Trees such as hackberry, pear and walnut also occur in the wider massif.
The area is known for wildlife typical of the Zagros, including brown bear, wolves, birds of prey and several wild cats, among them caracal, lynx and leopard. It is also an important plant and animal refuge in western Iran, with many endemic and threatened species associated with the mountain environment.
Guides and organised ascents
For a mountain of this height and terrain, a certified guide is sensible unless you already know the Zagros well and are comfortable with high-altitude navigation, loose rock and changing weather. In Iran, the national guide body is the Iran Mountain Guide Association, which is not an IFMGA/UIAGM member. The national federation is the I.R. Iran Mountaineering and Sport Climbing Federation.
Visitors also commonly look to established guiding companies in Iran such as Damavand Adventures and Adventure Iran, both based in Tehran. A guided ascent usually covers route planning, transport, local logistics, food and safety support; the cost depends on trip length, group size, hut nights and equipment needs. For Dena and the surrounding park, local arrangements are best made through Iranian mountaineering contacts and park-aware operators.
Safety and preparation
Dena demands full mountain preparation: layered clothing, navigation skills, sun protection, cold-weather gear and enough water for a long day on dry ridges. The upper mountain can be cold and windy even when the valleys are warm, and snow or ice may remain on the crest outside midsummer. Loose rock and poor visibility are common hazards.
For mountain rescue in Iran, the emergency number is 112 for the Red Crescent rescue service. The ambulance number is 115, and police are 110. Mobile coverage can be unreliable in valleys and behind ridges, so download maps before setting out and do not depend on a signal for navigation or emergency contact.
History and name
Dena is also known by several other names, including Qash Mastan, Bijan 3, Kūh-e Denā, Dena, Kūh-e Dīnār and Ghash Mastan. The mountain has long been a well-known high massif in the Zagros and is part of a region with a deep history of plant and animal domestication.
The massif also entered recent history through the crash of Iran Aseman Airlines Flight 3704 on 18 February 2018, when an ATR 72-212 struck the mountain in poor weather while flying from Tehran to Yasuj. All 66 people on board died. The accident drew attention to the difficulty of flying and rescuing in this terrain.
Interesting facts
Dena is the highest of 246 named peaks in its range and the high point of the whole Dena chain. It ranks 31st among named peaks in Iran. Its prominence is 2,615 m, which makes it a major independent summit in the Zagros rather than a minor top on a ridge.
The nearest higher-looking neighbours are still lower than Dena, with Morgol only 2 m lower and Ghezel 30 m lower. The mountain also sits inside Dena National Park, so it combines high alpine terrain with protected natural habitat.
FAQ
How high is Dena? Dena rises to 4,409 m.
Where is Dena located? It is in Iran, in Kohgiluyeh and Buyer Ahmad Province, within Dena County and Dena district, in the South Central Zagros.
Is Dena the highest mountain in its range? Yes. It is the highest peak in the Dena range and the range’s high point.
What peaks are close to Dena? Nearby summits include Seh Qolleh, Heram, Ghezel and Morgol, all within about 2 km.
Are there huts on Dena? OpenStreetMap shows no hut or shelter within 2 km of the top, so hikers usually plan the ascent as a day trip or carry their own tent.
Is there water on the way to Dena? The upper mountain is dry and exposed, so carry your own supply. In warm weather, plan on about 1.5 to 3 litres for a day, more if the route is long or hot. Any snowmelt or stream water should be treated before drinking.
Does mobile phone coverage work on Dena? Coverage in the hills is patchy and depends on the operator. On open ridges it may be available, but it often fails in valleys and behind ridges. 112 reaches emergency services over any available network, and maps should be downloaded before setting out.