We arrived at the meeting spot at 1:30 nighttime. We then went to the highest temple in Bali and all the guides did a ceremony for the climb to go well. There was an air of excitement and eeriness among the group. Then we started and we entered the forest part of the mountain. It had rained a little so this made the path VERY slippery, lots of people fell and it taught everybody right away: this was a serious matter and was NOT going to be a walk in the park. Grabbing tree branches and rocks as not to fall we went on, but some people already were very discouraged after the first hour and a half. Not even halfway there, the guide advised them to stop then and there and wait for the sunset to go back down. We took breaks to eat and catch out breath, little did we know this was still the easy part. After about 2 hours you reach the rocky part of the mountain. No tree branches to hold on to, no earth to softly land on when you fall. All there was, was rocks and rocks and more rocks. The trekking turned into serious climbing soon after that and this was REALLY hard and if you are not very fit you will not likely be able to take this. I am a runner but this is way tougher than running 20 kilometres, to give you a basic idea of how tough it is. Some parts are also dangerous, you have to trust your body and your balance because if you fall, you fall long and hard. The guides are amazing, they help you so much and despite looking small they are very tough and able to help bigger people than themselves go up. The last hour is the hardest, the group paused every 15 min otherwise you will cry and get desperate of the pain of climbing. The night sky with stars is amazing. The thing which surprised me was how MENTALLY hard it was. It is dark and you can't see the end, you feel like being in an endless hell. Then suddenly you are there (appr 6:00 morning) and everybody was emotional. The view is like sheer heaven and the sunrise is so beautiful you feel like crying. The guides prepare hot food and take good care of you. It is VERY cold also because of the sweat & the hight of coarse. You best bring multiple layers. I underestimated the cold coming from Holland a cold country for Indonesian standards. For me it was so scary to go down because then it is light and you see the danger and the hight. The first 2 hours going down I wanted to cry, but the monkeys along the way amused me. As far as going to the toilet goes, prepare on having little to no privacy. When I reached the forest part it went quite fast, we were back at the temple from top in 3 hours total. I felt like I had been though utter HELL but also I felt like I had been to HEAVEN on top. Mixed very intense feelings which made this whole experience unforgettable. But think before you try this, it is harder than they say in the tourist books and stuff.