Surrounded by the clouds

Sometimes I wonder how the clouds gets such a fantastic shape
As we can see there is no clouds in the sky and sometimes it's appears in small pieces, but very rarely it forms such a wonderful shape, as I clicked in the image

Just like other days I was coming back from Ambernath, my dad was driving the bike, as we start to climb the bridge, I saw the clouds, as this types of views are the needs of a photographer, I took of my mobile camera and captured the beautiful view of clouds.
As we see the image,
          It seems like the clouds has surrounded the entire area.