Orbs are just collections of energy. They are not evidence of paranormal activity. Orbs can be anything from dust to collections of energy in the air.

Several things could factor into the picture. Even with an abundance of trees, light can still come through fractures in the overbrush. All it would take is a slight moment of light to create the effect. This would also explain why it is in a limited area. Light spots can appear and disappear in mere seconds.

I have been studing the parnaormal for years and i consider myself very experienced in this field. I do believe in spirits, i just don't believe this is a spirit... sorry.