Just watched the Sylvia Plath episode of A Poet's Guide to Britain on BBC iplayer, it's excellent. Although Plath is not normally thought of as a landscape poet it's always been her nature poetry and how she manages to reflect her mental state in the landscape around her that that has interested me.
The main focus is on the Yorkshire moors and her Wuthering Heights poem though there is also mention of her other Yorkshire poems such as The Great Carbuncle and Hardcastle Crags. There are snippets of radio interviews with Plath and also footage of a tv interview with her mother, Aurelia Plath. Plenty great shots of the Yorkshire moors while Plath's poems are read, it's a really good programme, go watch it!