Its Earth Hour Camp, you can visit they official web http://www.earthhour.org/ .
I never shoot this kind of event/festival/camp but atleast i capture something from this camp, because of the first time i shoot this event, and i forgot to take out the lens filter, that why as u can see the flare on the image, [...]

Model : Riezman
Do you guys think im should put strobist info ?? Please Throw Ur Opinion down here..