Det finns en plats som heter Open Hole i Kanada.
Alla platser i världen som heter "Open Hole".
Wellington (4)
Windsor (4)
Saint Andrews (3)
Selkirk (3)
Tracadie (3)
Kingston (3)
Victoria (3)
Havelock (3)
Centreville (3)
Sidney (3)
Borden (3)
Princeton (3)
Westport (3)
Milton (3)
Richmond (3)
Benton (3)
Aylmer (2)
Burlington (2)
Clinton (2)
Echo Bay (2)
Greenwood (2)
La Salle (2)
Mount Pleasant (2)
Red Rock (2)
Saint Paul (2)
Stony (2)
Waugh (2)
Bellevue (2)
Caribou (2)
Cumberland (2)