The end result is a patchwork grouse moor landscape like this one between Edmundbyers and Stanhope in Weardale. When flowering time comes around in July you see a similar patchwork, but now in shades of purple heather flowers.
Double-click for a clearer image of this picture and the next.
The grey areas here were probably burned during winter and have yet to regrow - the umber areas are older heather with new shoots, in peak flowering condition, that will hum with bees when it blooms.
For a year of two afterwards there's often a flush of growth of sorrel plants in the fertile ash released by burning, which in turn are colonised by small copper butterflies. Some of the best small copper populations that I've found in the uplands have been in landscapes like this.
These upland areas are also breeding grounds for curlew and golden plover and hunting grounds for merlin.