Encripted Message

While looking for clues that got me closer to the solution of my current quest, I came across these two arrangements of tiles, carefully layered upon freshly unwrapped "cotto" tiles.

At first I though about the result of some children game. Yet, as a telecoms engineer who spends endless hours on coding and encryption algorithms, I couldn't be able to resist the temptation of looking for an incidental meaning in them. The only one I was able to spot was a tilt and shift ... which has anyhow some kind of appeal.

Translation attempts are welcome. Please comment if any. :-)

In Search Of ...

I wrote that I used part of my time, during my latest stay in Tivoli, searching for traces of the local site of the Institute. I'm not sure if I set myself on the right track. Along one of my daily walks I stumbled upon (or better, under) this kind of inaccessible fortress. It is told to be a nunnery. In my past life in Tivoli I don't remember having seen any nun coming out of it. Facing this side of the building, right over the narrow street passing beneath, a huge ravine that leads down to the gorge carved by the Anio river in the last millions of years.