The Shimmings Valley is directly to the East of Petworth. You can reach it from Bartons Lane which is just opposite St Marys Church.
The traces of medieval field systems are still visible. These the slight ridges you can see in the grass and a remnant of the terraces that at one time would have made it possible to grow food on the slopes.
It is a feeding area for the rare barbastelle bat from Ebernoe Common, one of Britain's rarest mammmals. In summer at dusk you often see these bats flying along the length of the valley. On the wing they don't really look different to any other kind of bat but they do fly much straighter giving an appearance of single-mindedness.
More information on the barbastelle bat.
And here is proof that I am not the only person who loves the Shimmings Valley.