4 sets of light lines moving at 50 degree angles on the horizon; one appeared to have a bright light off one end.After watching the sunset, we noticed a strange phenomena in the afterglow light. There were 4 sets of light/lines across the sky each at an angle of 50 degress or so. At first we thought they might be jet contrails, but they were very defined, without any broken up pattern in the line like contrails leave. Two of us watched the lights and called the other 2 in our group to observe. They moved at the angle they were pointed in, slightly downward and then one moved out of sight. Another appeared to move out of sight and then it started going upward in the same angle and another one above it moved downward, maintaining the same amount of space from each other as they traveled in opposite directions. One line had a bright light off the end of it that appeared briefly. Finally after about 20 or so minutes the light lines disappeared.