We could see the very bright white light outside our camper but no shadows only objects in the light and carbled lanquage

My brother inlaw and I were deer hunting on winding stair mountain in southeastern oklahoma and decided to stay at winding stair campgound which is located out on a pointon winding stair mountain.  I was driving a pickup with a commerical camper with sleeping bags. we arrived at the campground and parked at the campground and parked in the parking lot over looking a canyon.  We went to bed about 10:00 p.m. and at 1:00 a.m. something woke me up and it was a bright light in the parking lot next to ourpickup.  I have never seen a light so bright.  I started to climb out the camper with my gun when something told me to stay put inside the camper.  I woke my brother inlaw and he said that was the brightest lights he had ever seen.  The odd thing was that no shaddows were being cast on the other side of the truck away from the light.  I asked my brother inlaw if he wanted go see what it was and at that moment an internal voice told me to stay in the camper and everything would be alright.  It was hard to look into the ,light it was so bright as if it was a white light not a vehicle light.  As we set in the camper we could see something walking in the light and could hear voices, a weird audiable voices such as muffled radio language type voices.  The objects walking in the light cast no shadows on the camper.  After watching for a while a peace came over us and we both laid down in our sleeping bags and in about 2-3 minutes the light went out.  One thing no sounds were ever heard except for the carbeled lanquage.  I have never told anybody this story and neither has ny brother inlaw.  I brougt it up to him 10 or so years later and he said he didn't want to talk about it anymore.
Date may be approximate.  PD