Bright circular object that emitted strange lights and raised in altitudeDate: 5/23/17; time 4:40-5:00; two witnesses. Appeared East from NSL over the mountains several kilometers away, object was circular in shape, emitting light that varied in intensity and shape. Object began emitting light rays that varied from spiky to wavy. After 7 minutes of doing this, object appeared to raise in altitude very quickly, and began emitting light rays again, after repeating this for approximately another 10 minutes, object disappeared suddenly without a trace or sound. Light behavior was very strange, almost as if object was being manipulated.