i like the look of this ,another good british horror.
like you im having problems locating decent artwork...all the official posters and photos are 72 dpi.(i say posters,theres only 1 so far)
this is a decent site tho:http://www.michaelbassett.com/pages/wilderness.htm
michael bassett directed it,and it includes a poster that wont be officially seen anywhere as its a reject.
SPOILER WARNING the stills pretty much lay out the film