Aerial deer cull closes Tasmania's Walls of Jerusalem National Park to walkers for a month

The deer cull will be conducted over 114,000 hectares and close the Walls of Jerusalem National Park for a month.  (ABC Open contributor Tabatha Badger)

A national park in Tasmania's Wilderness World Heritage Area popular with bushwalkers will be closed for a month while shooters attempt to wipe out the park's fallow deer population from helicopters.

It is estimated there are up to 300 fallow deer in the Walls of Jerusalem National Park in Tasmania's north-west and surrounds and their hooves cause huge damage to the area's sensitive ecology.