I HAVE NO IDEA WHO WAS INVOLVED ON OAK iSLAND, BUT THEY WERE CLEVER AND UNDERSTOOD HUMAN PSYCHOLOGY. THEY KNEW THAT THEY COULDN'T HIDE AN EXCAVATION BECAUSE AFTER A SEASON OR TWO A DEPRESSION FORMS AS THE SOIL RECOMPACTS SO THEY DUG THE PIT, BUT IN THE UPPER SECTION ABOVE THE HIGH WATER MARK CONSTRUCTED A RADIAL TUNNEL LEADING OFF TO

WHERE THEY PLACED THE GOODIES IN A CHAMBER TO BE RETRIEVED WHEN THEY WERE READY WITH A SIMPLE SHALLOW EXCAVATION. LEAVING THE TREASURE HUNTERS DIGGING DEEPER AND DEEPER FOLLOWING THE RED HERRING OF THE PIT. THE CONDUIT TUNNELS WERE SPRUNG AND THE PIT FILLED WITH WATER, BUT SINCE THEIR GOODIES WERE ABOVE THE HI WATER LEVEL THEY DIDNT ACTUALLY CARE , SINCE THEY COULD RETRIEVE IT ANY TIME THEY WISHED.
TtHEY ALSO RELIED ON THE WATER TUNNELS TO CARRY ON WITH THE ILLUSION OF A TREASURE BEING DEEPER BY FLOODING THE WORKINGS.
I HAVE NO IDEA WHERE THE NEW ACCESS TO THE TREASURE ROOM IS , UNLES IT IS BELOW THE CENTER ROCK OF THE BOULDER CROSS.
THE COCONUT, ETC, FIBERS WERE NECESSARY IN THE WATER TUNNELS IN ORDER TO KEEP THEM FREE AND OPEN, SINCE THEY DIDN/T KNOW WHEN OF IF THE TRAP WOULD BE SPRUNG.