Filming on the Avatar sequels is due to resume again in New Zealand, and now new set photos have emerged that provide a behind-the-scenes look at the large-scale production.

One of the images showcases "the lab," which looks to be the place where the human characters are transformed into their Na'vi counterparts. A second, smaller structure can be seen in the background of the image, and this appears to be another set.

Another images shows director James Cameron on the lab set, with production materials plastered on poster boards surrounding him.