 Herm is only 1½ miles long (north-south) and less than half a mile wide (east-west).In the northern part of the island are two hills, Le Petit Monceau and Le Grand Monceau.To the north of these is a common, leading to Mouisonniere Beach on the northern coast, with Oyster Point in the northwestern corner and La Pointe du Gentilhomme or Alderney Point at the northeastern corner.