While standing on the bank of a creek an extremely bright orb appeared & ascended up a hill & disappeared. it lasted for 30 seconds. there was no sound. there was no logical reason. it was about 4 feet off the ground. it stayed 4 feet off the ground while it ascended a hill & disappeared. it was not a reflection or a laser pointer. the sun was setting behind the hill. no one was in the area. a person would have made a noise while walking through the wooded area. the was no sound. i was briefly scared