Apparently the container is missing or has fallen on the ground. Feel free to replace it with a fresh log. Will check next time in the area.
The Clark Gregory Nature Preserve is a 29-hectare (73 acres) preserve that includes the two headlands on either side of the entrance to Chocolate Cove. It is located at Chocolate Cove on Deer Island in the Bay of Fundy. Its most recent owner, Clark Gregory, left the preserve to The Nature Conservancy, who subsequently transferred it to the Nature Trust.
https://www.naturetrust.nb.ca/en/clark-gregory-nature-preserve
Congrats to Marocma and Snoik for {FTF}