I was in irkutsk oblast, russia, outside of kirensk. it was night. me and my friend were hiking when we heard a buzzing noise and felt the ground vibrating a bit. we looked up and saw about 5 or 6 of the ufos. they were moving slowly at first, and some were stationary. they stayed like this for a minute or so, and then they moved west together in a formation. they stopped an started moving multiple times. some of the lights were blinking. the ufos also flew in a circular motion around our position for a few seconds, as if they could see us. the then sped off really quickly, and immediately after, my friend and i felt sick. my friend vomited on the way back. we both were physically and mentally shaken by the event.