O'Neills Camping Grounds is a free campsite managed by Timaru District Council, located near Cave in Canterbury. Positioned between a pine plantation and the Te Ana Wai River, the reserve accommodates self-contained motorhomes only, with a maximum stay of fourteen nights. Basic toilet facilities are provided. The site operates on a first-come, first-served basis without bookings. Nearby Cave village takes its name from limestone caves in the surrounding foothills, some containing Māori rock art dating back centuries. Campers should contact Timaru District Council to confirm current operating conditions and any specific requirements for self-contained vehicles.