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Everest One Owner - Allan Cohrs
Owner/Expedition Manager

As a guide in the Himalaya’s, Africa, South America and Australia, Allan delivers a personalised service, focused on providing a safe, professional experience for his clients.


He has guided in all corners of the globe with over 30 high altitude climbs in the Himalaya's including Mt Everest (8848m), Lhotse (8516m), Manaslu True Summit (8163m), Cho Oyu (8200m), Baruntse (7129m) and Ama Dablam (6812m), along with 10 climbs of Mera Peak (6476m), 6 climbs of Lobuche East and 4 of Island Peak and numerous other 6000m+ climbs, along with 14 summits of Mt Kilimanjaro (5895m) and two successful climbs of Aconcagua (6960m), the highest mountain in South America. 

He is an expert at managing clients in high altitude environments which has resulted in the highest success rates on both climbs and treks he leads.  He is experienced in handling logistics, decision making, assessing risk whilst maintaining a harmonious team environment. 


Allan is a well known identity in the mountains and has forged a close working relationship with the best guides and local service providers for many years now, which only enhances the overall experience and confidence for those who join Everest One.


Allan is popular with his clients for his calm approach, depth of knowledge, experience and approachability.


He takes enormous pride in helping people reach their goal and along the way, building life-changing, unforgettable memories.

Everest One Head Guide Dawa Sherpa - Nepal
Head Guide - Nepal

Dawa Tenzing Sherpa is from the village of Phortse in the Khumbu district where he lives with his wife and son.​ He is also a graduate from the Khumbu Climbing Centre and is Wilderness First Aid trained.

He is an experienced, professional Sherpa in the high-altitude arena, and highly proficient in technical skills, assessing the conditions and managing climbers, whilst focussing on their safety and success.

He has an incredible climbing resume which includes summits of Everest and Manaslu.

Personally, some of Dawa Tenzing Sherpas climbs include:

  • Mt Everest (8848m) x 10

  • Manaslu (8163m) x 5

  • Lhotse (8516m)x 3

  • Cho Oyu ( 8201m) x 4

  • Makalu (8481m)

  • Ama Dablam (6812m) x 9

  • Peak Lenin (7134m) x 2


Everest One Guide Sonam Sherpa - Nepal
High Altitude Sherpa Guide - Nepal

Sonam Tashi Sherpa comes from the village of Phortse in the Khumbu region where he lives with his wife, son and daughter. He has guided on 29 expeditions above 8000m.


Personally, some of Sonam's climbs include:

  • Everest (8848m) x 9

  • Manaslu (8163m) x 7

  • Cho Oyu (8201m) x 2

  • K2 (8611m)

  • Broad Peak (8051m)

  • Ama Dablam (6812m) x 3

Sonam, and his son and daughter are recognised by the Guiness Book of Records as the first trio from a Sherpa family by scaling Mt Everest together on May 23, 2021.


Everest One Guide Ang Kama Sherpa - Nepal

High Altitude Sherpa Guide - Nepal

Ang Karma Sherpa comes from the village of Phortse in the Khumbu region where he lives with his wife and 2 daughters.

Like many Sherpas, he started his career young and has acquired vast experience in 8000m climbing, having worked on 43 expeditions.​ He is trained in Wilderness First Aid Medicine.

Personally, some of Ang Karma Sherpa climbs include:

  • Everest (8848m) x 14

  • Manaslu (8163) x 7

  • Lhotse (8516m) x 3

  • Cho Oyu (8201m) x 7

  • Makalu (8481m) x 2

  • Baruntse (7162m) x 5

  • Pumori (7161m)

  • Ama Dablam (6812m) x 9

Everest One Sherpa guide - Nepal

High Altitude Sherpa Guide - Nepal

Gyaljen Dorje Sherpa is also from the village of Phortse, where he lives with his wife, 2 daughters and son.

He has extensive experience climbing at high altitude and an impressive climbing resume, having guided on 31 expeditions above 8000m.

Personally, some of Gyaljen Dorje Sherpas climbs include:

  • Everest x 9

  • Manaslu x 7

  • Lhotse x 3

  • Cho Oyu x 3

  • Makalu

  • Ama Dablam x 3

Everest One staff member Devrash - Nepal

Base Camp Cook & Server - Nepal

Dev Raj is our cook and server. He comes from Mahakulung Pelma and he's been working in the trekking field for 15 years. He's married with 6 daughters and 1 son.

He has an important job to keep the climbers and trekkers fed with good food that fuel their energy. In 2022 and 2023, he's been the cook for Everest Expedition and went as far as to Camp 2 to make sure the climbers were well-fed.


He's also summited Lobuche East 2x and Mera Peak.

Everest One Operations Manager Ndehorio Philemon - Africa
Operations Manager - Africa

Ndehorio oversees all on-ground handling and logistics in Tanzania.  This role requires careful planning and attention to detail with large teams of support staff, equipment and food required for each expedition.

Ndehorio is the consummate professional and ensures that her team deliver each and every time.

Having been involved in adventure travel and hospitality for over 20 years, Ndehorio knows just how important it is to get it right; providing Everest One clients with the best service and support on Mt Kilimanjaro.

From outstanding, authentic accommodation in Moshi to quality equipment, a diverse, nutritious selection of meals and the most experienced guides on the mountain, Ndheorio has it covered.


Through Everest One's ongoing relationship with Ndehorio, together we ensure that our support staff are paid at higher than standard wages and are provided with all their essential provisions including quality food, warmth and shelter.

Everest One Co-ordinator Nardo Msuya - Africa
Coordinator - Africa

Nardo takes care of the behind the scenes planning and preparation for all of Everest One's expeditions.

Nardo arranges everything to ensure our clients are taken the best possible care of from collection at Kilimanjaro International Airport, comfortable local accommodation, transportation, climbing permits, equipment to arranging our support team of porters.

This is a huge operation which requires experience, patience and foresight, all of which Nardo possesses, having been involved in co-ordinating expeditions for over 10 years. 

From the moment Allan arrives in Tanzania, Nardo is co-ordinating with him, checking and ensuring every component of the climb has been addressed. 


Nardo is passionate not only about delivering the highest level service, but also taking care of and protecting the local support staff who are the backbone behind all of our expeditions.  

Everest One Head Guide Kassim - Africa
Head Guide - Africa

Kassim has been working with Everest One since 2015, and has led every trip since then.


Kassim is a qualified and licensed guide in Tanzania, with Wilderness First Aid training, having reached the summit of Mt Kilimanjaro more than 200 times and standing on top with the Everest One team 13 times now.


The son of a Park Ranger in Kilimanjaro National Park, you would be hard pressed to find a more knowledgeable and capable guide on the mountain.

Kassim and Allan have developed a wonderful, professional relationship over the years and work extremely well together, with Kassim taking charge of co-ordinating the support team leaving Allan to take care of the clients.


Kassim is a strong, powerful climber who has an incredible ability to motivate climbers on summit night and instruct his team of guides to provide close, personalised support for all clients.

Everest One Head Guide Bosco - Africa
Head Guide - Africa

Bosco is Everest One's second in charge, and supports Kassim on most climbs.

Having worked with Everest One since 2016, Bosco is a qualified, licensed guide, also with Wilderness First Aid training.


Apart from being a strong and capable climber. Bosco is also one of the fittest guides on the mountain, and is currently training for a speed climb of Kilimanjaro in under 12 hours.

Having reached the summit over 100 times, Bosco has an impeccable knowledge of the mountain, from the best view points to a few select points where mobile phone service can be reached.

Bosco is charismatic, engaging and great company for clients on the mountain.  He is passionate about the mountain and helping people, and has been a big part in Everest One's high success rate, with his ability to encourage and support climbers on their summit push.

Everest One Cook Japhet - Africa
Head Cook - Africa

Japhet is the head cook on all of Everest One's climbs on Mt Kilimanjaro, and has a challenging job, planning a wide and varied diet for the entire expedition.  


Japhet carefully plans every meal, ensuring an abundance of fresh produce, eggs, meat, local specialties, porridge, bread and snacks.


No one goes hungry on our trips, and Japhet dishes up delicious, hearty meals that will satisfy even the most fussiest eater.

All dietary requirements are catered for from vegetarian, vegan to gluten free meals.

An absolute perfectionist, and working from a basic facility inside his cooks tent, Japhet and his team manage to produce meals that put a smile on everyone's face.

Japhet understands that the key to success is ensuring people are happy, feel sustained, have sufficient fuel in their body whilst he follows strict hygiene practices, giving climbers the best shot at reaching their goal.

His daily soups, served with lunch and dinner are made fresh from local ingredients, and are simply amazing whilst the freshly served coffee, brewed from local Tanzanian beans are a treat for those needing a caffeine fix in the morning.

Everest One Camp Co-ordinator Rashid - Africa
Camp Coordinator - Africa

Rashid takes care of Everest One's clients once we set off on the mountain.

Rashid works closely with the cooking team, but is also there and available whenever the clients have a special request or need assistance.

Rashid co-ordinates the meal service, arranges hot drinks, afternoon tea, refills water bottles and ensures the groups needs are always being met.

Rashid never stops.  He is the last to go the bed and first guy up in the morning.

He is usually the most popular member of our team, and connects so well with our clients.

On summit night, Rashid serves you hot drinks and snacks inside your tent whilst you are getting ready for your climb, saving you from venturing out in the cold before you need to.

Imagine being woken each morning with a gentle wake-up call outside your tent, and then being served with a hot drink whilst still curled up in your sleeping bag.

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