Bookmark - Cloud-to-Cloud Rain (maybe)

Caught this on our way to church one day with the Fuji 7000; a silhouette of the tree in the foreground with the unusual phenomenon of one rain cloud appearing to rain onto another. (though I'm not sure that's actually the case)

Clouds are and do very, very interesting things.  First is their weight...many, many tons of water floating around up there in the sky.  Then the behavior.  With the Big Cahoona, my Nikon D300s, a scene was captured in which rivulets of clouds came flowing off a distant mountain range as if a waterfall (look to the right of the pic posted here).

Then one time, from an airplane, I saw two types of clouds interacting in a similar way.  We were above an overcast of cumulus clouds, and a layer of some wispier clouds was flowing through the valleys in between their tops.  I learned that some pilots carry a DSLR in their cockpits, capturing these kinds of things from their front-row seats.