Camping with friends at music festival, noticed something above the lake on my own, went to the shore to look, and found others also looking at it. including security (claimed to be ex us military but cannot confirm) and ambulance teams. i fetched som more people to check it out, in total around 10 -15 people stayed and watched it for at least 20 minutes. i kept watching it for its entirety and then it just disaappeared. moved erratically (wobbling in the sky) and shooting across at very high speed . kinda of even seemed it just teleported at times. video was filmed on a samsung s9+ at 10x magnification.