This is a parallel, side-by-side stereo photograph of the famous windmill at Brill, in Bucks. Parallel because the left image is viewed by the left eye, the right by the right. If you have a stereo viewing aid, such as the OWL Viewer created by Brian May (of Queen fame) you should find this easy to see; some people can freeview (using the relaxed-eye technique for magic eye images); the two dots above each image should converge to one to achieve the stereo illusion. It helps to have the stereo pair on a mobile phone filling the length of the screen or the width of an iPad. (You can click through to the source image to help do this, if necessary.)
This is an example of a hyperstereo, where the image is created with a separation of the taking point for the two images is greater than that of our eyes. The rule of thumb is that the separation should be about 1/30 of the distance to the subject. If the windmill was 15 metres from the drone then the separation between to the two positions should be about 50cm. (I guesstimated!)
Thanks for looking!