From left to right, John, a guide on Mt. Kilimanjaro, Demi, our founder and lead guide, Cony, a guide and crew organizer, and Comfort, a safari driver.
Diamond Glacier Adventures is a Tanzania-based company that specializes in showing you the wonders of east Africa. We offer a smorgasbord of hikes and trips that can be combined, to your liking, into an unforgettable journey.
We offer mountain treks, safaris to our National Parks, visits to indigenous cultures, and trips to the white beaches of Zanzibar. The hike up Mt. Kilimanjaro is one of our specialties, and if you consider it, we’ll provide you with some good tips and tricks to succeed.
We have have been welcoming people to East Africa since 2008. Our founder and lead guide Demi Kessy has more than 20 years of experience guiding groups of people.
Read more reviews from our wonderful clients here or read all of them on Tripadvisor. We are humbled and honored.
Machame Route Kilimanjaro Review - Demi and his team at DGA went above and beyond to make my Kilimanjaro trek an unforgettable experience. From the initial booking to the final descent, their professionalism, care, and... read more expertise were outstanding.
In the weeks before I arrived, Demi was very responsive to my questions regarding the gear list, itinerary, etc. and even face-timed with me if it was easier to talk through them.
Demi was an excellent guide during the trek. He had a great safety first mentality to monitor my adjustment to the altitude and make sure I was comfortable with the pace. He was very knowledgeable about the mountain terrain and even pointed out interesting plants and animals. On the summit night, the pacing was absolutely perfect and Demi provided great motivation and coaching.
Cony prepared very tasty meals and I was surprised by the quality and variety of food he made considering we were on a mountain. The porters were great as well. It was impressive how fast they were on the trail and how quickly they set up camp.
Since I finished the trek early, Demi even organized a one day safari for me at Arusha National Park afterwards. I appreciate how he was able to do this even though there was very little notice.
I can't say enough great things about my experience with DGA. I'm happy I was able to support a locally owned business that provided an amazing service at a reasonable price. If you are planning to climb Kilimanjaro, I wholeheartedly recommend DGA.
Andrew S 2025-10-05
Lemosho 7days - We went Lemosho trail of Killimanjaro for 7days with DGA. Demi and Chris cheered us up all the way to peak, Nicholas served delicious and various meals for 7days and... read more 8 porters became friends at the end of hiking. Great team to rely on!
haengsook k 2025-08-30
5 days to summit. Amazing team. - What an experience. 5 days to summit Kilimanjaro. I have never experienced anything like this trip, the challenge is real but the reward was incredible. Also have to shoutout the... read more guide and porter at diamond glacier for taking care of me, I felt very safe and in good hands the whole time and they care for you like for those five days you are their centre of the world.
Ahmed B 2025-07-21
Amazing Guide/Company for the top of Africa - Demi, Cony and the whole DGA team made our trip to Kilimanjaro one that was impossible to forget. Excellent communication before, during, and after the trip ensured we were always... read more confident and ready to go. It was clear from the moment we were picked up from our hotel in Arusha that Demi was held in high regard by his porters, and it showed with their amazing hospitality on the mountain (I ate better meals at 13,000 feet than I typically make for myself!). Tipping was done in an extremely open and transparent way at the end of our trip and they treated each-other like family throughout.
Our small group (4 people) had varied hiking experience, age, and fitness and Demi worked with us to slightly edit the Lemosho route to give us a shorter day before our summit attempt. Pre-climb diligence, daily blood oxygen tests, check-ins on how we were feeling, and tailored guidance it was clear Demi was super knowledgeable and gave us the best chance to reach the summit. The whole climb was beautiful and learning about the different climate zones, plants, animals, and some history along the way was a great addition. The view from the summit looking down on a sunrise makes leaving at midnight and hiking totally worth it!
I can't say enough good things about DGA and the entire support staff and would 100% use them again were I to return to Kenya/Tanzania to climb another of the areas mountains in the coming years.
PS. They also did logistics and facilitated a pre-trip Safari which was similarly fantastic. It made the whole trip so much more relaxing knowing that DGA had things under control.
Matthew P 2025-04-29
Kilimanjaro review - Great team and very safety oriented. We had a great climb and an amazing experience. The whole crew was awesome, the guides, the cook, the porters and everyone involved.
Melhim B 2024-11-08
When we planned our Kilimanjaro trip, a friend recommended Diamond Glacier Adventures. So we contacted Demi and Koni. We had a lot of Whatsapp exchange when organizing the trip. Everything... read more worked really well with very short response-times to our questions - so we felt well prepared.
The trip itself was also well organized. We all made it to the top and had a great time with a lot of fun. Demi and Koni have a lot of experience (e.g. they proposed to start the summit day later than other groups to avoid strong winds and climbing all through the night - this worked perfectly for us). The food prepared by Nicolas („Stomach engineer“) was really good and provided the energy we needed. I had a bit of a cough when arriving in Tanzania and everyone cared and the team prepared some local ‚medicine‘, which made me feel better. So great time for us with a successful summit day - thanks a lot to the whole DGA team for making this happen.
As we finished a day earlier Koni proposed to show us some local spots in his hometown Arusha (such as his favourite local fish restaurant or the local market). We also really enjoyed this additional tour, before heading to Zanzibar to rebalance.
So, overall 100% recommendation for DGA. We will stay in touch and maybe next time do a Safari with DGA. Thanks again to the whole team!
JiriStajner96 2024-02-26
Demi and Cony are strongly recommended by friend of mine. Without DGA could our journey never be so fascinating and successful. We begann our journey with climbing Kilimanjaro. Both... read more of them are very experienced and have wide knowledge of the nature. We have chosen 7 days lemoshu route after consulting Demi. These 7 days in Kilimanjaro are the most unforgettable time in our life even it was hard for all of us, not only physically but also mentally! Demi and Cony encouraged us all the time and always being helpful during the whole journey. I must mention the whole clew here since they are true Kili-fighters! Without their help, we could never make it to the top! Of course, it was a hard job for the clew but they showed us their good vibes. Cony checked our gears very carefully the night before the climbing to ensure that we are fully prepared. During the time in Kilimanjaro, we are treated so well and always had very tasty food. Demi and Cony arranged our first time vacation in Tanzania (also first time in Africa) so good and very thoughtful. Before we started our mountain tour, we also got time to visit the local coffee plant farm to learn more about the culture. Cony took us to a local restaurant to taste very fresh and delicious fish from Victoria lake. After climbing the Kilimanjaro, Demi arranged our 5 days safari in Ngorongoro Cater and Serengeti. We had great time and enjoyed every moments in the national parks. Demi also arranged our visit in Zanzibar with a local driver who took good care of us. He showed us the local community spicy farm and learned a lot about very individual spicy plant. We cannot finish our great adventure in Tanzania in such short sentences. Because of Demi and Cony (DGA), our journey in Tansania is now being so unforgettable and heartwarming.
alexlA2515XP 2023-10-08
Kilimanjaro Trip of a Life Time! - This truly was an incredible pilgrimage of a Life time! It would not be possible to reach the peak of the African continent without an expert highly trained lead... read more Demi and his assistant Cony, and the whole 19 people crew of porters, people that carried everything on themselves 25kg each. The cook, Nicholas worked so hard to make amazing traditional meals from fresh healthy products. I can't believe they carried all that! 3 hot meals a day, soups, potatoes, pasta, deserts. Just unbelievable! Server Dismas, was ready with a bucket of hot water, soap and towel as soon as we returned from our long and hard hike. Nobody mentions that hikes are not easy, they are hard! Hours of hike on challenging uphill and downhills. And in addition, if you are not tolerating elevation well, you have a headache and feel nauseous. I run marathons and thought it would be easy, but it was not! So be ready! Nevertheless, Demi's guidance was great! On the last day, on the night of summit, I was sick from elevation. Headache and constant vomiting. Not all felt like that, just lucky me. So you maybe just fine. But Demi was so strong in supporting and keeping me go. We just kept moving up and up. Everybody else was very supportive too. The whole team was wonderful, fun and caring. You are in great hands with Demi and his team. We got so lucky to have a wonderful couple from Germany who did a proposal on top of the mount Kilimanjaro! The lady asked a guy "are you sure? because we all severely oxygen deprived here" LOL! It was incredible! Be ready to tough it out! Go and have an unforgettable experience! Anna, from California
BabyNakuja 2023-09-18
Perfect experience with Demi and all the team - We had the chance to have Demi organizing our 5 days Safari (Taranguire, Ngorongoro, Serengeti + Masai village visit with bike tour and bush lunch). We connected to him through... read more friends who did the Kili with him, and were very statisfied. Our Safari was perfectly organized (from the transfers to bookings Safari camps and lunches in the middle of the parcs) fitting our requests, and even more (kudos to the chief who mastered the unexpected BBQ the last night:-)
Demi is very flexible, looking to make your wish and dreams come true.
Thanks Demi and all the team, our family will never forget those experiences.