This rare event from 2008 demonstrates how Glacier Bay is a place of very dramatic change. At the time, the official chart showed over 60 feet of water at the position where this small tour boat went aground. Which was accurate when the area was charted. But in the 40-50 years between, the main outlet stream from Grand Pacific Glacier filled this area with mud and rocks. Since this grounding the chart has been updated and this area is now mapped as inter-tidal, which is what you see here. The new chart also contains this warning: "Shoaling may also exist in these areas due to high rates of sediment deposition." The 70+ persons on-board were safely evacuated, the vessel was re-floated and towed to safe harbor. Photographer: Bill Eichenlaub