Nebra pinnacle? - Discussions, questions

Hi
Recently I was advised of a rare? Astrological event that will take place in my natal chart corresponding to my time exact birth details etc.
I´ve tried to research this but found little information. I´m wondering if anyone could please shed some light on this for me or have had this in their chart etc and the experience that they had when it occurred if possible. It´s referred to as a "Nebra pinnacle"..??? Thanks in advance.