There have been several posts here and on YouTube indicating that the Anafi will fly at those altitudes. However, you need to be aware that the Anafi will use up substantially more space in any maneuvers than at sea level. For instance, if you bring the Anafi towards you and expect to stop it ten feet in front of you by releasing the stick as you may do at sea level it would be likely to either hit you or travel 5 feet beyond your head. The vertical climb speed would also be affected, until at around 3,500 meters the drone would barely be able to climb at all. Battery life would also be affected as it will take more power to hover or move in any direction besides straight down.....around 2500m-3000m, will Anafi fly OK in those environments?