It's used in America, specifically in Arkansas. It's a physiographical term, used (in Arkansas) about elevated ridges of more erosion-resistant formations or partially-consolidated sediments. Where the gently-dipping formations crop out at the surface, they form these ridges or "wolds".
In Texas, the continuation of these selfsame features into Texas are referred to by the physiographical term "cuestas" (Spanish, lit. "ribs") generally used there.
When such features are more steeply-dipping and sharply pronounced, they are called "hogbacks" instead, and are common among the erosion-resistant Mesozoic and Paleozoic outcroppings in the mountain West and Basin-and-Range province.
Thanks for the US connection to wold.
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