Thorney hill is a cache by the National Trust at Clumber Park.
All caches have nearby off road parking, within 15 minute walk, but can all be done by walking or cycling along easy routes.
Entry into the park is free for National Trust Members. For non members: Adults- £4.40 Gift Aid/£4.00 standard; Child - £2.20 GA/£2.00 Standard; Family 2 adults - £11.00 GA/£10.00 Standard; Family 1 adult - £6.60 GA/£6.00 Standard. .