Thunderstorm over San Pedro Volcano and Lake Atitlan, Guatemala

http://farm6.staticflickr.com/5521/11590783636_0dde23fb50_m.jpg

Phil Marion has added a photo to the pool:

via Destinations around the world - The travel group Pool http://www.flickr.com/photos/phil_marion/11590783636/in/pool-844972@N25