As in several recent years with long dry summers lost landscape features created by past generations have revealed themselves through the patched grass as foundations or as evidence of lost pathways
At Chatsworth the South Lawn has yielded up the details on site of the parterre lad out for the first Duke of Devonshire in 1699, but turfed over only thirty years later. Drawings exist of the intricate design but now there exists additional physical evidence as to the exact form of the design.
This re-emergence at Chatsworth is set out by the BBC News site at Drone footage reveals hidden 17th Century garden which includes a video with the drone footage about the feature.
The Chatsworth parterre is also discussed in a Mail Online article about several such parch marks indicating lost garden features or foundations. This article looks at new evidence from this summer at Gawthorpe Hall, Mottrsfont Abbey. at Polesden Lacey and Powis Castle. It can be seen at Heatwave reveals historic features at National Trust properties
At Chatsworth there is talk of possibly doing a temporary recreation of the parterre in future years. I think I would be inclined there and at Gawthorpe to see a permanent reconstruction of the former arrangement of paths and planting.