Amazing Roll Cloud Caught On Camera In Uruguay
The ‘roll cloud', one of nature's most stunning and rarest displays was photographed over Las Olas beach in Maldonado, Uruguay, reports The Mail, London.
Twisting languidly through the sky towards the horizon, the roll cloud stretched along miles.
Nasa was so impressed with the image it published it on its website as 'picture of the day'.
Experts at the agency said the clouds are formed when downdrafts from storm fronts cause warm air to rise, before cooling and so forming clouds.
When this happens uniformly across a large front, a roll cloud may form.
The clouds can be seen sporadically throughout the world. They can stretch across 600 miles and tower a mile into the sky.