At New House Farm Westerdale, I found this interesting wall.
Single width stone but with some incredibly long copes neatly levelled off. My spade (for scale) has a long handle making the wall here near six foot tall.
There were numerous walls on the farm with copes of differing length, but non as extreme as this.
The only other similar wall I've seen in the North York Moors is this one at Commondale
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