About Us

About Thamserku Expedition

We plan every step of your expedition

We’re Nepal’s leading travel-adventure company with over 30 years of steadfast experience in operating high-altitude mountaineering and trekking in the Himalayas of Nepal, Tibet and Pakistan.

Thamserku started operating expeditions in mid-1987 with the shared adventure dream of both our people and our customer to conquer the highest peaks in the world.

We seek to explore unscaled mountains in the Himalaya with the continual promise of sustainable tourism, supporting the economic enhancement of remote communities and the lives of disadvantaged peoples.

After a decade of expansion and working towards this goal, Thamserku now stands as the foremost adventure company in Nepal offering specialized trekking and expedition services to more than 2000 travelers each year from over the globe with its specific strategic brands.

Although the expansion and growth have resulted in wider audiences, the story of Thamserku remained about family; a family of highly skilled individuals and friends who trusted us along the journey of their mountaineering dreams.

Why Work With Us

Because We Know These Routes & Mountain Expeditions Better Than Anyone In The World

Reliability & Credibility

Thamserku Expedition is a legally certified mountaineering company under the Yeti Group of companies, registered in 1987. Thamserku has its affiliation with other legal bodies such as the Trekking Agencies Association of Nepal (TAAN), Nepal Mountaineering Association (NMA) and other Tourism Organizations in Nepal.

Sense of Responsibility

Our concern for the environment and promoting a broader sustainability agenda are integral to our professional activities and management. We contribute to economic, environmental and social progress to achieve sustainable development and help our clients achieve responsible trips.

Dedicated Team-24/7

As receptive agents, we realise the importance of timely and efficient communications. Hence, for our guests, we have assigned dedicated travel experts, who can respond to our clients' needs as they arise. Questions can come up anywhere, at any time. Our operation team on the ground is available 24 hours a day to help your guest travelling with us.

Wealth of Experience

Building on three decades of experience and a deep understanding of mountains, people, and the spirit of adventure, Thamserku offers the highest quality expeditions and mountaineering logistic arrangements in Nepal and beyond. With an experience of operating over 500+ expeditions programs since 1987 across the Himalayas to draw on, you can rest assured that your summit goal with Thamserku will be all you hoped it to be and much more.

Client Care

Thamserku today employs over 300 experienced, friendly, and loyal staff together with 200+ guides and Sherpa specialists in technical mountain skills and safety. Besides, we take on around 80 skilled, innovative and adaptable cooks, about 50 multi-lingual (French, German and English) tour leaders, and 30+ efficient and experienced office and support personnel. We are all here to make your expeditions go smoothly and safely by maintaining the highest standard possible.

Trend Leaders

Through our position as a lead expedition operating company in Nepal, we were able to influence and guide the development of the trekking and tourism sector in the country. We also use our experience and reputation to consult our partners to innovate new expeditions and the most suited route to ascent.

A Sherpa Formed Company

Thamserku is Sherpa owned company. The Sherpas have traditionally been well known by "The guardians of the Himalayas". We are closely connected with the mountains and respect them as our god. As so, we love to share our knowledge, cultures and share the love with the mountaineering community across the globe. Our philosophy is quite simple: to follow our traditions of hospitality and welcome you to share our homeland, the Himalayas.




Sonam Sherpa was born in the village of Pangom in the Solukhumbu (Everest) Region of Nepal. His family had a successful cattle business which his father wanted Sonam to continue running.


During a climbing expedition, Sonam’s older brother died on Mt Manaslu when an avalanche buried the camp, killing all 15 climbers. This greatly affected Sonam and later inspired him to work on the mountains.


Sonam and his friends ran away from their village to Kathmandu. For the next five years he worked as an assistant trekking guide in the Annapurna and Langtang Regions. He avoided the Everest Region fearing his family would make him go home.


At the age of 19 Sonam befriended a French traveller. He worked for three months in a ski resort in France, saving money, making friends, and learning to ski.


Returning to Nepal, Sonam travelled to Ladakh via Kashmir on reconnaissance to bring a French group to that region. Later that year, with the Ladakh trip a success, his French friend returned to France and promoted Sonam’s trips. Over the following years, travellers from France joined Sonam’s trips. The business was born.


While in France, Sonam was invited by his friends to climb Mt Blanc. After a 3 week mountaineering course in France, he successfully scaled Mt Blanc. This was Sonam’s first climbing experience.


Returning to France every year, and then to Ladakh with his French groups, Sonam’s network and reputation grew.


Back in Nepal, Sonam turned his attention to the mountains in his home country and he climbed Annapurna.


As a guide in an 11 person team, Sonam successfully summitted the southwest ridge of Thamserku.


After three years of running his business single-handedly, Sonam invited his two brothers to come and work with him turning the company into a family business. Thamserku became the 3rd biggest adventure company in Nepal.


Thamserku became 2nd biggest adventure company in Nepal.


Thamserku became the number 1 adventure company in Nepal – and remained the top company for 16 years.


After seeing the demand for flights and how difficult it was to get seats on Royal Nepal Airlines, the only airline flying to the Everest Region at the time, Thamserku established Yeti Airlines.


The hospitality branch of Thamserku started with the opening of Yeti Mountain Home in the Everest region – the first comfort lodge on the trekking trails.


Sonam’s brother Ang Tshering took over the running of Yeti Airlines and the subsequent development of their aviation sector with multiple airlines and helicopter services.

Over the following two decades, Thamserku’s business has continued to thrive and go from strength to strength, growing from modest beginnings to employing 3000 employees across the various sectors. World renowned resorts across Nepal, the largest aviation network in the country and still one of the top adventure company’s – Thamserku is widely recognised as a pioneer in Nepal for travel, expedition and hospitality.

Who Are We?

Meet Our Thamserku Team


Sonam Sherpa

Founder and Chairman

Founder and Chairman of Thamserku Trekking, Sonam Sherpa is also Executive Chairman of Yeti Airlines, Managing Director of Yeti Mountain Home, deluxe mountain lodges in the Everest region and Ker and Downey, comfort lodges in Annapurna region.

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Management Team

Namgyal Sherpa

Managing Director

Namgyal works closely with travel associations supporting the development of travel and tourism in Nepal. Namgyal's work is not only bringing tangible economic benefits to Nepal but also strengthening awareness of responsible tourism and ecologically sustainable ideals.

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Anjan Rai

Client Relationship Manager

Anjan applies nearly three decades of experience in Tourism Industry and worldwide travel to his position as Senior Executive Manager. He believes that the past can light the way for a better future. He brings with him a valuable perspective, providing unparallel services understanding exactly what you need as a Thamserku client. Anjan enjoys playing tennis and swimming. Currently he is looking after the expedition services and also looks after the operation of our Spanish market.

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Ram Chandra Rana

Finance Controller

Serving as the backbone of Thamserku Trekking, Ram has been working with us for over 20 years. He is the Chief Finance Controller, handling the overall finance department. He is known for his huge, beaming smile and complete dedication to his profession. He enjoys playing tennis and spending time with his family.

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IFMGA Guides

Dawa Gyalje Sherpa


Dawa Gyalje Sherpa has successfully climbed eight of the 14 highest peaks in the world! Including Everest 10 times. He has also climbed Kilimanjaro, Aconcagua and alps in Europe. Apart from climbing renowned mountains, it is his passion to climb and explore the unclimbed mountains of Nepal. In recent years he successfully climbed five 6000 meter unclimbed peaks.

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Naren Shai Thakuri


Naren has reached the summit of Everest twice, Manaslu and Amadablam and several other 6000 meter peaks. He has also climbed Mount Elbrus the highest mountain in Europe. Travelling most of the European countries and the United states he is familiar with the cultures and perspectives of mountaineering of international climbers and makes many enjoyable journeys.

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Pemba Gelje Sherpa


Pemba Gelje Sherpa has successfully climbed Everest 5 times from both North and South col, Mount K2 – the second highest peak in the world, Manaslu and Cho-Oyu. Climbing Kanchenjunga from Basecamp to summit in one day and guiding the first South African woman to Everest without any oxygen supplementary, being one of his most notable expeditions.

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Pemba Rita Sherpa


Pemba Rita Sherpa has climbed Everest 10 times and other 8000 meters mountains such as Sisapangma, Cho-Oyu and Manaslu. It is his passion to share his climbing skills to the climbers who are new in the field. As per Pemba, every expedition he had guided has been a wonderful experience. He has lots of respect towards the mountain and the people who are passionate to climb Nepalese Himalayas.

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Read Our Client Reviews

Are you ready to book your Thamserku mountain expedition?

We’re leading groups throughout the 2022 across 8 of the highest mountains across Nepal, Tibet and Pakistan.

If you want to join us on these Expeditions this year, get in touch or view our expedition packages and book online today!

Thamserku is Nepal’s leading adventure-travel company with over 30 years of steadfast experience in operating high-altitude mountaineering and trekking in the Himalayas of Nepal, Tibet and Pakistan.

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Thamserku is Nepal’s leading adventure-travel company with over 30 years of steadfast experience in operating high-altitude mountaineering and trekking in the Himalayas of Nepal, Tibet and Pakistan. Get in contact for any help on your expedition choices.


Thamserku Expedition
Kathmandu 44600, Nepal