East Yorkshire is flatter and more arable than the Dales or the Moors further north — the Wolds are gently rolling rather than dramatic, and much of the county is given over to farming rather than hill grazing. That makes it a less obvious "native pony" county than North Yorkshire, but it has a genuine, longstanding horse culture around Beverley, historically linked to racing, and a solid Pony Club and riding club presence supporting families rather than breeders.
What buyers get here is practicality: flat, easy hacking country, straightforward road access from Hull, York and the A1 corridor, and generally more affordable land than the West Yorkshire conurbation. Ponies tend to be a mix of native crosses, cobs and all-rounders rather than a single dominant breed, so go in with an open mind about type and focus on temperament and schooling instead.