Huge pillars of light appeared December 17, 2012 near the town of Palotina, Brazil- VIDEO

Perhaps these are crepuscluar rays?

[link to en.wikipedia.org]

the way that they lit up the clouds from underneath makes me doubt that it was a simple reflection

Anticrepuscular rays converge in the opposite direction and you must have your back to the sun or sunset point to see them. They appear to converge towards the antisolar point, the point on the sky sphere directly opposite the sun. Like crepuscular rays they are parallel shafts of sunlight from holes in the clouds and their apparently odd directions are a perspective effect. Think of a long straight road, it converges towards the horizon but turn around and it also converges to the opposite horizon. Crepuscular and anticrepuscular rays behave in the same way.

Anticrepuscular rays are not rare but they must be sought carefully. When ordinary crepuscular rays are visible, turn around and search for their opposite numbers. More rarely, sunrays pass right across the sky.

never seen that before.....

Perhaps these are crepuscluar rays?

[link to en.wikipedia.org]

Ever seen this?

[link to papundits.files.wordpress.com]

Could just be a solarplant reflection, that would explain why the sun is on the other side of that video.

They were gonna build one at the coast of Brazil, Sobral in 2011.

This will help better understand too:

[link to apod.nasa.gov]

On the Internet appeared the video, which shows as huge unusual pillars of light emerged directly from the ground at December 17, 2012 near the town of Palotina, Brazil, THE VIDEO: [link to hainanwel.com]