"Oldoinyo Lengai" means “The Mountain of God” in the Maasai language. The summit of this strato-volcano is 2962 metres above sea level, and affords direct views into the caldera of Tanzania’s only officially-certified active volcano, and the world’s only carbonatite volcano; records of eruptions have been maintained since 1883, the largest of which deposited ash 120 from Arusha Town and 100 kilometres away in Loliondo on the Kenyan border to the north west.

It is located in northern Tanzania lying just south of Soda Ash Lake Natron in the Rift Valley, in the heart of Maasai country, and locally regarded as a sacred mountain. Looking north from it’s summit crater, the hot barren salt flats of Lake Natron stretch into the distance. To the south stretch the crater Highlands and the Ngorongoro Game Reserve. The eastern horizons dominated by Kilimanjaro and to the west the forested escarpments and hills comprising the western slopes of the Rift Valley. Every seven years Lengai erupts and plumes of smoke billow out of the crater.

It is possible to walk across the crater floor. The ascent of Oldoinyo Lengai is demanding on account of the day time heat, lack of water, steep and unsuitable slopes of ash and crumbly rocks and considerable height gain. Normally you can start ascending to summit early in the morning and reach to summit at sunrise. Short and a warm jacket are suitable for ascent, also long trousers are good as the summit before dawn can be cold. Access route from the North West allows an early descent to be made from the summit in the morning shadow.

How to Get to Ol Doinyo Lengai

By Air

1. To Arusha:

1. International Flight: Most visitors fly into Kilimanjaro International Airport (JRO) or Julius Nyerere International Airport (DAR) in Dar es Salaam. From there, connecting flights to Arusha Airport (ARK) are available.
2. Domestic Flight: Domestic flights from major cities in Tanzania, such as Dar es Salaam or Zanzibar, to Arusha are frequent and convenient.

By Ground

2. From Arusha to Ol Doinyo Lengai:

1. Route Options:
2. Via Mto wa Mbu: Drive from Arusha towards Mto wa Mbu, then continue north towards Engaruka and Lake Natron. This route is preferred for its relatively better road conditions.
3. Via Engaruka: Another option is driving from Arusha through Engaruka to Lake Natron. This route is more rugged and adventurous, passing through Maasai villages and stunning landscapes.

3. Transport Options:

1. Private Vehicle: Renting a 4x4 vehicle is recommended due to the rough terrain. Many rental companies in Arusha offer suitable vehicles.
2. Guided Tours: Several tour operators in Arusha provide guided tours to Ol Doinyo Lengai and Lake Natron, including transportation, accommodation, and guided activities.
3. Public Transport: Public buses and shared taxis (dala-dalas) are available but less reliable. Private transport or guided tours are advisable for convenience and safety.

Attractions and Tourism Activities

1. Volcano Climbing and Hiking:

1. Summit Hike: The climb to the summit of Ol Doinyo Lengai takes about 6-8 hours and is challenging due to steep slopes and loose volcanic ash. The reward is a breathtaking sunrise view from the top.
2. Night Hikes: Many climbers start at night to reach the summit by dawn. The cooler temperatures and stunning sunrise views make night hikes popular.
3. Guided Tours: Local guides provide invaluable insights into the volcanic activity, geology, and cultural significance of the mountain.

2. Geological Exploration:

1. Unique Lava: Witness the rare natrocarbonatite lava, which is unique to Ol Doinyo Lengai. The lava is black and very fluid, creating fascinating formations.
2. Crater Exploration: Explore the summit crater and observe active lava flows and unique geological features.

3. Cultural Tours:

1. Maasai Cultural Visits: Experience the Maasai culture through guided village tours. Learn about their traditions, lifestyle, and the spiritual significance of Ol Doinyo Lengai.

4. Bird Watching and Wildlife Viewing:

1. Bird Watching: The area around the mountain, especially near Lake Natron, is home to diverse bird species, including flamingos.
2. Wildlife Viewing: Spot wildlife such as zebras, giraffes, and antelopes in the vicinity.

Other Nearby Destinations

1. Lake Natron:

1. Flamingo Breeding Grounds: Lake Natron is a critical breeding site for lesser flamingos, supported by its alkaline waters.
2. Nature Walks: Guided walks around the lake offer insights into its unique ecology and geology.
3. Waterfalls: Visit Engare Sero Waterfall for a refreshing swim and relaxation.

2. Engare Sero Footprints:

1. Prehistoric Footprints: Explore ancient human footprints preserved in volcanic ash, providing a glimpse into early human history.

3. Empakaai Crater:

1. Crater Hikes: Enjoy stunning views and hiking opportunities around this volcanic caldera, which contains a soda lake.

4. Olduvai Gorge:

1. Archaeological Site: Known as the "Cradle of Mankind," this site has yielded significant hominid fossils and offers insights into early human evolution.
2. Museum: Visit the museum to see fossils and artifacts discovered in the area.

Nature of Accommodations

Near Ol Doinyo Lengai and Lake Natron, accommodation options range from basic campsites to comfortable lodges:

1. Campsites:

1. Basic Camping: Several basic campsites around Lake Natron and Ol Doinyo Lengai offer a rugged, authentic experience. Facilities typically include tents, pit latrines, and basic showers.
2. Guided Camping: Some tour operators offer guided camping experiences, including meals and local guides.

2. Lodges and Tented Camps:

1. Lake Natron Tented Camp: Provides comfortable safari tents with en-suite bathrooms, dining facilities, and stunning views.
2. Maasai Giraffe Eco Lodge: Offers accommodation in traditional Maasai-style bomas with modern amenities.
3. Worldview Lodge: Features cozy bungalows with views of Ol Doinyo Lengai and Lake Natron, as well as a restaurant and guided tours.

3. Maasai Cultural Lodges:

1. Cultural Experience: Some lodges and camps near the mountain are run by the Maasai community, providing an immersive cultural experience with traditional Maasai hospitality and cuisine.

Embark on an unforgettable adventure to Ol Doinyo Lengai, where the spirit of the mountain and the warmth of the Maasai people await you. The climb may be challenging, but the views from the summit, the sense of accomplishment, and the memories you will create are truly unparalleled. Pack your bags, lace up your hiking boots, and get ready to experience the Mountain of God – a journey that will leave you inspired and in awe of the natural world.