Wall of the worlds.

It is a little known fact that the Roman Emperor Hadrian (he of The Wall fame, no, not Roger Waters) had a great fondness for sheep. He would often buy them indulgent treats, one of which was their own little Wall. The sheep herds grew rapidly, and the cleverer ones soon headed south for the milder weather. The main shows some of their descendents.
After walking past the wall, we decided to take a detour to a long deep valley. We were nearly at its end when we heard a low disconcerting electrical hum. Looking up, we were just able to see the overwhelming bright light of a UFO mother ship, and the release of a smaller spacecraft.
I'm sending this to you live, and can only hope that it reaches you before the hideous aliens release their....