What characterizes an express permission site for cave diving?

An express permission site for cave diving is characterized by the fact that the landowner has granted specific permission for divers to access the area. This permission often comes with conditions or guidelines that divers must follow to ensure safety and protect the environment. Such permission could include agreements on the number of divers allowed, specific times for access, and regulations on the activities permitted while diving. This explicit authorization not only provides legal access but also fosters responsible diving practices and contributes to environmental stewardship.

In contrast, a site that is open to the public does not necessarily imply that express permission has been granted by the landowner for diving activities. Unregulated access suggests a lack of oversight, which could lead to unsafe practices and potential harm to divers or the environment. A site that requires no prior notice may imply ease of access, but without documented permission from landowners, it does not qualify as an express permission site. Each of these alternatives lacks the crucial element of explicit consent from the property owner that defines an express permission site.