Missing Collie Dartmoor

Millie an elderly farm collie wandered off after her supper and wasnt seen for 4 hours. K9SD jara was taken to her kennel and tracked her about a mile through a field into a small gully, where she was found very cold and wet but unhurt. her owners son managed to get her out without a problem but being old and unfirm she couldnt get her self out.