Abstract: A barrier device for preventing passage, having a simple construction and capable of being lowered into a shallow trench. The barrier device, preferably constructed as a gate for preventing passage to and from buildings or property, comprises a moveable framework for supporting a telescopic barrier arrangement and a movement device for moving the support device between a barrier position and an open position of the telescopic barrier arrangement. The telescopic barrier arrangement is shortened during the movement from the barrier position to the open position with the help of a counter-force which can be applied by a sunken base, and extended in the opposite direction during movement from the open position to the barrier position, with the help of the force of gravity.