In March 2018, during the SGHT Rodent Monitoring project that completed the eradication project, a visit to Prince Olav Harbour enabled the replica grave marker for John Anderson's grave on pig point to be placed in the correct position. The replica had been placed a few metres away due to fur seal activity at the time, but fortunately a pipe had been used to  mark the correct spot, and a photograph of the original marker allowed the replica to be correctly aligned.