I want to make a desert known to always generate mirages (I don’t mean it necessary occur during night though, only during a day is fine too, but if it possible for mirages to happen during the night, it is even better), even if the person is fine or not hungry or dehydrated to enhance the mirage due to their mind state, so whenever they look in any angle (eagle view or flying is optional, but it even better if mirage can generate even in that view) in there, it always generate some kind of mirage even just near the desert border, making it impossible to cross it without getting lost.
what do I need to make it possible for such kind of desert? Like the kind of surrounding, temperature, humidity, or the type of sand such as it is more sparkly or reflective like a pile of small glass sand, etc.
I prefer it to be something that naturally occurs, not man made technology like a human using some kind of projection or simulation, and to make it clear, magic is out of this question.
I also dont want any hallucinogenic substance or drug to be part of it even if it naturally occurred, because I want it be a mirage.
feel free to correct my grammar and add the correct tag to this, since i dont know what tag is more appropriate for this.