This is done in Adobe Photoshop by layering up a sequence of images as layers and deleting any unwanted overlaps.

Rocky drops a cliff in Jackson Hole, Wy
ROQUE VERTONE JR stomping a drop in Jackson Hole, Wyoming

Note in this example I left white space to show the individual images that were taking with a digital camera.  Otherwise you want to crop the entire sequence to appear as one single image.

Chris Naugle at Holiday Valley