On a fine and hot Maltese June morning, clouds were observed approaching the Islands through satellite image and hence rushed outside to photograph since bad weather was predicted for the Islands. I was treated with a very rare roll cloud for altocumulus as per this photo taken in a very wide angle through Iphone panorama setting. This was very strange since such roll clouds usually develop at low-levels rather than mid to high levels as can be clearly seen in the photo with a cirrus-like anvil (only recently in the cloud atlas issued in 2017 that this cloud is now recognized as `volutus`). In fact, the weather sounding confirmed that the cloud base was 5.6 kilometres (18,500 feet) above sea-level which is clearly mid-level height closing towards high-level clouds. My thaught is that a warm front passing at altitude towards the Maltese Islands along with shortwave at 500mb were the culprit for this cloud to form and turn the wind towards the WSW at upper-levels. No fronts were indicated by the surface pressure chart. Also in the satellite imagery a thunder clap from this cloud system was seen but none over the Maltese Islands themselves. Decaying thunderstorms could also produce such clouds. An increase in wind at the surface was observed when this roll cloud was passing overhead but it produced little rain on the ground assuming that most of its rain evaporated before reaching the ground due to a hot 26C at the surface. The first thumbnail shows a close-up of the roll cloud taken by a professional camera. More photos of the same cloud could be provided upon request for anybody studying such strange cloud formations.