Anonymous + 4000m | Mont BlancOostduinkerke4/55-10-2016Since I suffer from altitude sickness from 1500m and I wanted to see the mountain gorillas in Uganda, I slept in the height tent for 1 month (up to 4000m). We have just returned and the trip went smoothly. We left at 1600m and went up to 2000m and all without problems. It was a great success for me.